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What must occur before a fatty acid can be metabolized by cellular respiration?
Below are the lognormal distributions that resulted from sampling tadpoles, caddisfly larvae, and algae at the John Heinz Wildlife refuge in Philadelphia. Which of the following statements is correct regarding these data? Caddisfly Larvae The least sampling effort went into sampling algae Tadpoles had the most moderately abundant species sampled The high number of tadpoles resulted in a decrease in the number of caddisfly larvae More rare species of tadpoles were sampled than rare species of caddisfly larvae
Water in ocean currents can descend when it becomes colder and saltier than the surrounding water. If water descends to the bottom of the ocean, then other water must rise to the top. What causes water to rise to the top of the ocean? A. It cools down and dissolves additional salt. B. It becomes less dense than the surrounding water. C. It is forced upward by underwater mountain ranges. D. It is brought upward by organisms that live in the ocean.
A study gave data on body mass (in grams) from representative samples of lizards from disturbed habitats on each of four islands in the Bahamas (Bimini, Great Exuma, Harbor, and New Providence). Summary statistics are given in the accompanying table. Island Sample Mean Weight Sample Standard Deviation Sample Size ------------ Bimini 4.32 0.87 20 Great Exuma 7.21 1.31 18 Harbor 5.85 1.00 20 New Providence 5.23 1.12 20 N=78, grand total T=437.78, and x̄=5.61 Does this data provide convincing evidence that the mean mass for this species of lizards is not the same for all four island lizard populations? You can assume that the mass distribution is approximately normal for each island. (Let μ1, μ2, μ3, and μ4 be true mean mass for each of four island lizard populations. Use α=0.05.)
Which of the following lists contains only examples of renewable sources of energy? A. hydroelectric, petroleum, solar, and wind B. fossil fuels and nuclear energy C. coal, solar, wind, and biomass D. wind, tidal, geothermal, and hydroelectric
In a dihybrid cross, one is working with?
(1) Required information of What Would You Choose? Imagine that about 6 weeks ago, at the start of the semester, you began a workout program including lifting weights at the student recreation center. You are disappointed that you have not seen the results you were anticipating. You can lift more now than you could when you started, but you were hoping to firm and define the muscles in your arms, back, and abs. You are wondering if you need more protein. You have seen numerous advertisements for protein and amino acid supplements, but they are expensive. Answer the following questions as you determine what you would choose as the optimal nutrition to support your weighttraining regimen. Sports nutrition experts recommend that strength-training athletes consume protein in amounts greater than the RDA. True or False True False
The nurse is caring for a patient with a ureteral calculus. Which manifestation would the nurse most likely expect to observe? homeostasis ureterodynia cystitis polyuria nocturia
If a typical somatic cell has 64 chromosomes, how many chromosomes are expected in each gamete of that organism?
You are studying the population dynamics of an algae species that recently invaded a lake. You measured the amount of algae in the lake at the time of the invasion and then for six years afterward (shown in green dots below). You also conducted experiments showing this lake can support an algae population density of 200 cells per mm^2, marked below as a dashed orange line labeled K. What would you estimate the algae population density will be in two more years (at year 8)? Use the triangular markers on the graph to help you answer. (Note: population density can be modeled in the same manner as population size.)
In a redox reaction electron are donated and accepted by molecules or atoms water is formed by all the extro protons coming together electron carriers, NADH and FADN2, pick up electrons from the ETS proteins are precursors for electron carriers an electron gradient is generated across the mitochondria inner membrane
Based on his experiments with pea plants, how many factors did Mendel conclude an offspring receives for a single characteristic? A. 1 B. 3 C. 0 D. 2
Aplia Homework: Cell Physiology In the preceding figure, three of the organelles are highlighted in red. These structures together make up the
MS Energy balance Quiz - Human (no subject) - sgonzalezswolfn le/content/1479900/viewContent/38608440/Niew nce Quiz 1:18:49 Question 4 (Mandatory) (5 points) A limitation in using the body mass index is that: a) it is not accurate if used on women b) it is not a good indicator of health risks c) it does not take body composition into account d) it is very difficult to determine
Pre lab - Reducing Error 2d1595db/04e30fe0-7a2d-11ed-836c-b7059adf99c3/7250bae0-23cb-11ed-b26a... Which of the following steps could you take to reduce error in your experimente select all that apply -- there are three correct options. Have only one person conduct the experiment. Use the same brand of lighting in each chamber. Ensure that all the chambers' gas analyzers are calibrated. Include both healthy and sick potatoes in the experiment. Keep the potato plants outside prior to the experiment. Use five different species of potato plants. SUBMIT
What's the output of this code? myflowers = ["Acacia", "Begonia", "Carnation", "Dandelion", "Begonia", "Acacia"] print(myflowers[1])
Which of the following is NOT true of B lymphocytes? B lymphocytes are activated by helper T cells. B lymphocytes mature in the bone marrow. B lymphocytes respond to specific antigens. B lymphocytes are the same as T cells.
ATI TEAS SmartPrep 2.0: Science Close ati. TEAS SmartPrep: Science Pretest ? Quiz Instruction Which of the following statements describes the function of ribosomes? A They are used by cells to protect strands of DNA. B They maintain lipid production and storage. C They facilitate protein synthesis. D They convert food energy into cell energy.
Which of the following is a true statement about vertebrate reproduction? Birds and mammals provide parental care to the offspring. All vertebrates have internal fertilization. All mammals give birth to fully formed live offpring. No vertebrate undergoes metamorphosis.
Unit Exam - Populations r = (CBR + IMA) - (CDR + EM) CBR = 1% IMA = 1% CDR = 1% EM = 3% What is r? -2% 4% 6%
Question 9 0.5 pts This figure shows the result of interaction of RBC antigens ( A antigens) with the antibody against the RBC antigen (anti-A antibodies). This result is called (d) coagulation transfusion hemostasis agglutination
Question 3 of 15 , Step 1 of 1 Correct In an effort to control vegetation overgrowh, 113 rabbits are released in an isolated area free of predators. After 2 years, it is estimated that the rabbit population has increased to 1017. Assuming exponential population growth, what will the population be after another 3 months? Round to the nearest rabbit.
Which of the following is true about vitamin D synthesis? a. Smog or heavy cloud cover does not block the sun's ultraviolet rays that promote vitamin D synthesis in the stain. b. Tanning lamps do not stimulate vitamin D synthesis. c. Sunscreens with an SPF of 10 or above prevent the synthesis of vitamin D. d. Dark-skinned people require more sunlight exposure than light-skinned people to make an equivalent amount of vitamin D.
Listen The inner planets are made mostly of rock and metal because... the Sun is made mostly of rock and metal and the inner planets are closest to the Sun lighter materials cannot orbit the Sun; they would fall in immediately it was so hot where the inner planets formed that the lighter materials evaporated Jupiter's large gravity immediately attracted all the lighter materials, and so there were few light atoms left by the time the inner planets were ready to form
Children with lead (Pb) levels below the USA actionable level of 10 ug Pb / dI blood have no adverse effects from lead. True False
These receive environmental information and convert them into impulses that are conducted to the central nervous system. myelin sensory receptors motor nerves effectors neuroglia
T cells that secrete cytokines that help antibody responses are called Th1 regulatory T cells thymocytes Th2
The agar-gel immunodiffusion results below indicate the unknown animal serum (US) contains horse ( Ho ) antigen.
6.3. How Do You Learn Through Operant Conditioning? Children at Happy Hills Summer Camp can earn tokens for "super awesome" behaviors like helping out another camper or pitching in to clean up. If they misbehave, then they lose a token. All the campers who end the week with at least 15 tokens get to stay at the pool and play games for an extra hour on Friday afternoon. The kind of reward system used by the counselors at Happy Hills is called a token economy. Which of the following elements of operant conditioning are at play here?
3. If a bacterium tested positive for both PR-dextrose and PR-lactose, it must be capable of using what two substances as the main carbon source?
Where are the A, B, and Rh antigens located? Multiple Choice On platelets Within the plasma On erythrocytes On leukocytes
Question 11 (4 points) Choose the diatomic gases, i.e., those elements that have two atoms in them. argon oxygen fluorine neon hydrogen nitrogen helium chlorine
Feedback regulation of a metabolic pathway can either be activation or Inhibition
Student Guide (continued) Sequence and Protein Structure Chart
The forelimbs of lizards and frogs share a common bony structure and embryonic origin. Although insects and birds both use wings to fly, the wings in each species are structurally different and do not share a common embryonic origin. A teacher asked four of her students to identify structures based on the information above. The students' answers are shown in the table below. Forelimbs of lizards and frogs Wings of insects and birds -------------------------------------------------------------------------- Student 1 analogous analogous Student 2 homologous analogous Student 3 analogous homologous Student 4 homologous homologous Which student correctly identified the structures? A. Student 4 B. student 2 C. student 1
Question 15 (1 point) The prefix ultra- means: - outside - different - same - excess, beyond - many, much Question 16 (5 points) Match the hormones below with their function.
Currently, in the United States the greatest volume of goods and services is shipped by water. rail. pipelines. trucks and vans.
End of Semester Test: Biology with Virtual Labs A Tomas had low levels of calcium in his body. Vitamin D is essential in maintaining a calcium balance. He started taking vitamin D supplements. Because Tomas took high doses of vitamin D, the calcium levels in his body increased. Which endocrine glands will help maintain homeostasis by regulating the increased calcium levels? adrenal gland ovary pancreas isle thyroid parathyroid Reset Next
What gas was missing from the Earth's atmosphere during the Archean? (A) ammonia (B) helium (C) oxygen (D) carbon dioxide
Type 1 diabetes is the result of an insulin deficiency that occurs when insulin-producing cells in the pancreas are destroyed. Stuttering Type 1 diabetes Hypertension Asthma
L. lactis bacteria may live on plants or in milk. These two environments contain different types or sugars. Plants contain polysaccharides but not lactose. Milk contains lactose but not polysaccharides. L. lactis are often best adapted to fermenting the sugar in their environment. So, L. lactis living on plants often have polysaccharide-specific fermentation, and L. lactis living in milk often have lactose-specific fermentation. Consider the population of L. lactis bacteria over the time period previously shown. Over this time period, bacteria with polysaccharide-specific fermentation were less likely to survive and reproduce than bacteria with lactose-specific fermentation. This means that having polysaccharide-specific fermentation was less advantageous than having lactose-specific fermentation.
How much energy do the tertiary consumers receive if the producers receive 25,000 J of energy?
Use the diagram above to answer the following questions. Identify the letter that is indicating the lumen.
The force of muscle contraction is controlled by multiple motor unit summation or recruitment. (A) True (B) False
Question 21 What do the genioglossus, hyoglossus, and styloglossus muscles have in comnnon? A All names reflect direction of muscle fibers. B Each acts synergistically to elevate the jaw. C) All names indicate the relative size of the muscle. D All act on the tongue. Last saved 6:27:04 PM
Match the terms associated with heart structure with their correct descriptions. (Click to select) Structure from which chordae tendineae originate (Click to select) Prevents blood movement from right ventricle to right atrium (Click to select) Membranes around heart (Click to select) Prevents blood movement from left ventricle to left atrium (Click to select) Gives rise to left and right pulmonary arteries (Click to select) Drains blood from myocardium into right atrium (Click to select) Inner lining of heart chamber (Click to select) Layer largely composed of cardiac muscle tissue (Click to select) Space containing serous fluid to reduce friction during heartbeats (Click to select) Drains blood from myocardial capillaries (Click to select) Supplies blood to heart muscle (Click to select) Distributes blood to body organs (systemic circuit) except lungs
2 Construct a food chain label the producer, primary consumer, secondary consumer, and tertiary consumer. An owl eats a snake, the snake eats a squirrel, the squirrel ate a nut.
Where does the Calvin cycle take place? Select one: a. chlorophyll molecule b. cytoplasm surrounding the chloroplast c. thylakoid membrane d. outer membrane of the chloroplast e. stroma of the chloroplast
4. Would cultural characteristics like colony morphology be of value to a clinical microbiologist? How could they be used? 5. Were your cultures consistent in appearance? How could you confirm your culture was a pure culture? Where during the process of aseptic transfers could contaminants be introduced? 6. Jane was very careful in performing her Petri dish inoculation. When she examined her plate during the next lab period, a fuzzy white colony was growing on her plate, but not along her inoculation streak. What happened? Where did this colony come from? 7. Jeffrey, Jane's partner, inoculated a tryptone broth tube with E. coli. When he examined his broth tube during the next lab period, there was no growth at all. What might he have done incorrectly during his experiment? 8. In the case file, the organism responsible for the patient's death is a normal member of the human microbiota. How do you explain its having caused the death of this patient? 9. What is the connection between the events described in the case file and today's laboratory activity on aseptic technique?
Which of the following water-soluble vitamins has been used to treat carpal tunnel syndrome, PMS, and nausea during pregnancy? Thiamin Pyridoxine (B6) Niacin Pantothenic Acid
49496 49496, 15778 49495 49501, 15778 Choose 1 option.
Erythroplakias are precancerous white patches that can be found in the mouths of smokeless tobacco users.
Which of the following approaches to preventing a recurrence of sudden cardiac death is the most common? Implantable cardioverter-defibrillator Administration of amiodarone Continuous Holter monitoring Long-term Aspirin therapy
T cells migrate to the thymus to mature and B cells mature in the bone marrow where they develop immunocompetence and self-tolerance. Clonal selection Cells become effector and memory cells. Cells are exported from the primary lymphoid organs to seed (colonize) the secondary lymphoid organs.
QUESTION 1 Items can typically be stored in working memory for approximately how long? About 20 seconds A day One minute One week
A controllable risk factor for heart attack is: age genetics homocysteine inadequate exercise
Which field of science attempts to explain patterns of inheritance?
7. What is the recommended duration for each exercise session to achieve long-term brain benefits? 8. What is the main benefit of exercise on the prefrontal cortex? 9. How does exercise affect neurotransmitter levels in the brain? 10. What is the main message the speaker wants to convey about exercise and the brain? a) Exercise is only beneficial for physical health b) Exercise can cure neurodegenerative diseases c) Exercise has immediate and long-term positive effects on the brain d) Exercise is not necessary for maintaining brain health
Listen Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic level. Which letter represents an organism that could be a carnivore? A B C E D
Obesity is defined as a body mass index (BMI) of 30 kg / m^2 or more. A 95% confidence interval for the percentage of U.S. women aged 18 to 29 who were obese was found to be 19.5% to 21.7%. What was the sample size? Round the intermediate calculations to four decimal places and round up your final answer to the next whole number. n=
24 of 68 Concepts completed (i) Multiple Choice Question Alexander Fleming is the scientist that first isolated tetracycline from Streptomyces first observed the antimicrobial effects of penicillin synthesized penicillin through a chemical process in the laboratory developed the antibiotic Salvarsan to treat syphilis
Question 30 2 Points Terri collapsed at work and had to be taken to the hospital. While she was in the hospital, she revealed to the medical staff that she had been working over eighty hours per week for the last month and never had time to sleep or eat right. Terri's collapse was likely due to the of Hans Selye's General Adaptation Syndrome. (A) alarm stage (B) resistance stage (C) exhaustion stage D adjustment stage Question 31 2 Points Identify the FALSE statement regarding sexual orientation. A A person that was sexually abused as a child may develop a homosexual orientation. B. Sexual orientation refers to the erotic feelings you have towards males, females, or both sexes. (C) It's possible for identical twins to have different sexual orientations. D People choose their sexual orientation.
What structure consists of a set of prokaryotic genes for proteins with related functions? Barr body promoter operon transposon
Connective tissue Mucus-producing cell Columnar cell Cilia. Nucleus
All of the following can help improve immune function as people age EXCEPT consuming more calories steroid drugs sleeping more exercise
Question 17 A cell that is not actively dividing is in what phase of the cell cycle? S M G1 G2 GO
QUESTION 6 The white blood cells that attack foreign invaders to the body are called antibodies telomeres lymphocytes immune cells
Replication of DNA in a eukaryote occurs during which phase of the cell cycle? M phase S phase G1 phase G2 phase
Can the microorganism multiply within phagocytes? a. yes b. no
A kindergarten teacher provides students with squares of carpet and asks them to trace the letter shapes onto the carpet with their fingers. For which of the following students is this activity most appropriate? A a student lacking in print awareness B a student struggling with correct letter formation C a student with strong phoneme awareness, but little understanding of print concepts a student struggling to understand print directionality
The is made up of a vascular coat and the rods and cones that help interpret light and colors. macula sclera retina comea
Multiple Choice Question Which of the following are included in metabolism? O Neither the synthesis nor the breakdown of organic molecules O Both the synthesis and breakdown of organic molecules O Only the synthesis of organic molecules O Only the breakdown of organic molecules Need help? Review these concept resources.
Wilbur is working in a lab testing bacteria populations. After starting out with a population of 394 bacteria, he observes the change in population and notices population triples every 25 minutes. Find the population after 2 hours. Round to the nearest bacterium.
Which of the following attaches muscle to bone? fontanel ligament cartilage tendon
A construction worker is building a wall. The wall is 17.5 yd long. He needs to place a stud every 15 in. The first stud has already been placed at one end of the wall. How many additional studs are needed, if the last stud will be placed at the other end of the wall? First fill in the blanks on the left side of the equation using three of the ratios shown. Then write your answer on the right side of the equation. ft yd mi (square)/(square) in stud × 5
A field biologist examined the sex ratio at birth of the lesser snow geese. A random sample of nests containing four eggs was taken. For each egg resulting in a live gosling, the laying order and the gender of the gosling were recorded. Of the 46 successfully hatched first eggs, 25 were male. Are the conditions met to calculate a confidence interval for the proportion of successfully hatched first eggs that are male? Choose the most complete answer. Yes: a random sample was taken, and both n(p-hat) ≥ 10 and n(1-(p-hat)) ≥ 10 Yes: a random sample was taken, and both np ≥ 10 and n(1-p) ≥ 10 No: a random sample was taken, but the n(p-hat) ≥ 10 and n(1-(p-hat)) ≥ 10 condition was not met No: a random sample was taken, but the np ≥ 10 and n(1-p) ≥ 10 condition was not met
Which statement explains how a stable ecosystem can exist even while the populations in it vary over time? A. If individuals in a population cannot find shelter, they will use new abiotic factors for shelter so the population can continue to grow. B. If a prey population grows, it will decrease the size of the predator population because the predators will have less competition for food. C. Less rain one year will cause populations to decrease due to a lack of food, and populations will stay at this reduced size even when rain returns. D. If a disease spreads through a population that has a lot of genetic variation, resistant individuals will survive and the population will recover.
Which one of the following molecules would be most likely to travel by facilitated diffusion? a tiny inorganic molecule a large, charged molecule a molecule of oxygen
Lisa has straight hair and no freckles. Her genotype is AaEe (two genes on two different chromosomes): a recessive mutation in the A gene (a) causes curly hair and a recessive mutation in the E (e) gene causes freckles. Using alleles A/a and E/e from Lisa, represent two different ways that these chromosomes could align during metaphase I of meiosis.
The deeper of the two layers of the skin is the hypodermis. 0.5 True or False points True False
The polymerase chain reaction requires one specific DNA oligonucleotide as a primer. single-stranded DNA as template. cyclical denaturation and annealing of double-stranded DNA.
Which of the following classes of biological molecules includes enzymes? Carbohydrates Proteins Lipids Vitamins
Which of these molecules represents a carbohydrate?
The average fruit fly will lay 405 eggs into rotting fruit. A biologist wants to see if the average will be higher for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. 422,404,409,418,402,392,418,421,388,405,415,425,389,420,421 What can be concluded at the 0.10 level of significance level of significance?
Find the surface area and volume of the solid. surface area: 1534 square inches volume: 4081 cubic inches
Microsporogenesis in pines occurs within an integument involves mitosis of the tapetum within an anther results in the release of microspores from ovules involves diploid microsporocyte undergoing meiosis
The biological condition in which most water is lost from the organism, which then enters a state of severe dormancy, is known as . It is observed in the tardigrade or water bear. Guttation Anhydrobiosis Hibernation Estivation
Question 1 1 pts How old is the Earth estimated to be? 5020 years 2.5 billion years 2025 years 4.5 billion years
Solve the problem. Suppose the number of people infected with a certain virus x days after beginning treatment can be described by f(x)=567 e^(-0.01957 x). How many people were infected initially? A) 1956 B) 567 C) 560 D) 1
2.) During another one of Billy's shifts at the farm the owner informs him that pig 38-11 has been sold and will be picked up that afternoon. Which pig should Billy pull?
Edwin conducted a survey to find the percentage of people in an area who smoked regularly. He defined the label "smoking regularly" for males smoking 30 or more cigarettes in a day and for females smoking 20 or more. Out of 635 persons who took part in the survey, 71 are labeled as people who smoke regularly. What is the 90% confidence interval for this population proportion? Answer choices are rounded to the hundredths place. 0.11 to 0.80 0.11 to 0.13 0.09 to 0.80 0.09 to 0.13
Question 5 of 10 Which best describes a difference between prokaryotic cells and eukaryotic cells? A. Prokaryotic cells are much larger than eukaryotic cells. B. Prokaryotic cells contain a nucleus that is enclosed in a membrane. C. Eukaryotic cells are much simpler than prokaryotic cells. D. Eukaryotic cells contain organelles that are enclosed in membranes.
The American College of Sports Medicine recommends that for young adults performing static stretches, each stretch be held for a duration of seconds each time. Multiple Choice 60-90 5-10 30-60 10-30
Blood does not do which of the following? Transports nutrients Regulates body temperature Maintains fluid volume Secrete hormones
Which of the following are factors in determining whether individuals have darker or lighter skin? In darker skin, the melanocytes produce more melanin. In darker skin, the melanin breaks down more slowly. Darker skin contains more melanocytes. In darker skin, the melanin granules are more tightly clumped.
Which structure allows the air pressure in the middle ear to be equalized with the atmospheric pressure? - bony labyrinth - auditory tube - auricle - cochlea
Use the word bank to complete this activity regarding the causes of World War I. Germany dramatically increased the size of its army and navy. Many countries made secret agreements with one another should they, be attacked by another country. Many countries vied with other nations for control of resources in Asia and Africa. Extreme pride in one's country caused citizens to believe their country was infallible. Militarism Alliances Nationalism Imperialism
Question 1 1 pts Genetically Modified Organisms (GMO)? Are organisms hat have been physically altered through selective breeding or cross-breeding with unrelated species. Are organisms whose genetic material has been altered using genetic engineering techniques. Are organisms that have undergone natural mutations due to environmental factors or radiation exposure, resulting in changes to their genetic makeup. Next
Merocrine sweat glands are compound alveolar glands. - produce organic secretions that are metabolized by bacteria to produce body odor. - secrete a watery fluid directly onto the surface of the skin. - increase in number and activity with aging. - primarily function in lubricating the hairs.
Osmosis TABLE 2 CHANGES IN Mass (g) OF DIALYSIS Eggs *IMPORTANT: Change in Mass ( g ) at each time point = Total Mass ( g ) - Initial Mass ( g ) (first row) Time Point Measurement Egg 1 (placed in water) Egg 2 (placed in 1% sucrose solution) Egg 3 (placed in 10% sucrose solution) Egg 4 (placed in 30% sucrose solution) --- --- --- --- --- --- 0 min Initial Mass Change in Mass at 0 min 0 g 0g 0 g 0 g 15 min Total Mass Change in Mass at 15 min 30 min Total Mass Change in Mass at 30 min 45 min Total Mass Change in Mass at 45 min 60 min Total Mass Change in Mass at 60 min 75 min Total Mass Change in Mass at 75 min
Which of the following tissue types is the highly specialized for contraction? Muscle Tissue Nervous Tissue Epithelial Tissue Connective Tissue
The nucleotide sequences of wild-type genes are 5'-GCA ATG GGC ATC GAC TGA-3'. In a mutant form, there is a single nucleotide, with an adenine addition right after methionine. The nucleotide sequences are shown in triple code. What type of mutation would this be called? (Use a codon chart.) Nonsense Missense Frameshift Silent Revertant
The proteins of thermophiles Multiple Choice resist denaturation. react more efficiently with DNA. are easily denatured. have a particular amino acid sequence that restricts bond fo
Question 33(Multiple Choice Worth 4 points) Which type of ice does not raise sea levels as it melts? Land ice Sea ice Glaciers Black ice
Nitrogen fixation is the process by which some prokaryotes convert atmospheric nitrogen into and then incorporating that into cellular material.
Monocytes leave the marrow via the bloodstream. As they enter tissues, they mature and become granulocytes. lymphocytes. macrophages. neutrophils. Which of the following is NOT correct regarding host defenses? First line of defense blocks portals of entry. Second line of defense include inflammation and phagocytosis. Third line of defense is lymphocyte-dependent and specific. Fourth line of defense provides long-term immunity.
Question 5 0.05 pts Complete DNA replication on the following sequence. GATTACGAGGC Answer the question with no spaces between the letters.
Suppose a researcher wants to investigate the effect of the amount of fertilizer on the height of a common houseplant. More specifically, the researcher is interested in determining if there is a difference between the mean heights of the plants receiving one of three different fertilizer levels: high, medium, and low. Which of the following would be the correct null hypothesis? H0: μ1=μ2 H0: μ1=μ2=μ3 H0: μ1=μ2=μ3=μ4 HA: μ1=μ2=μ3
Cellular images of the cross-section of the stem of Tradescantia pallida
The causative agent for Lyme disease is.
Which kind of animal does the author NOT see on the trip to Antarctica? Select one answer. A penguin B huge white bird c elephant seal D great white shark
6. In the chloroplast, light energy absorbed by P700 energizes an electron that does which of the following? a. It immediately forms ATP b. It transfers to ferrodoxin, which then forms NADPH. c. It immediately forms NADPH. d. It transfers to PQ, which causes protons to enter the lumen. e. a and b 7. Which of these best describes the action of the Calvin cycle? a. It uses CO2 from the atmosphere, and ATP and NADPH from the light dependent reactions. b. It takes six cycles to reform RuBP, and three cycles to produce glucose. c. It can take place only in darkness. d. One molecule of carbon dioxide is fixed in three cycles. e. None of the above. 8. Which of the following is most important energy source for the process of photophosphorylation? a. Light b. Oxidative phosphorylation c. Light and oxidative phosphorylation d. Substrate level and oxidative phosphorylation e. Redox reactions 9. What will six cycles of the Calvin cycle produce? a. One molecule of glucose and six molecules of RuBP b. One molecule of glucose and three molecules of RuBP c. Two molecules of glucose and six molecules of RuBP d. Half of one molecule of glucose and three molecules of RuBP e. None of the above 10. When lipids are metabolized, glycerol is converted to G3P and enters glycolysis, while fatty acids have to go through beta-oxidation, get converted into acetyl-CoA and enter the Kreb cycle. a. Beta-oxidation, acetyl-CoA b. Deamination, pyruvate c. Deamination, Acetyl-CoA d. Beta-Oxidation, Pyruvate e. Deamination, Beta-Oxidation
The Gram stain below shows that the bacteria has a . (Color of organisms pictured is pinkish-red) - thick peptidoglycan - thin peptidoglycan - respiratory causing toxins - flagella
Most mammals have a specialized organ that brings the blood of the fetus into close contact with the blood of the mother; this allows food, water, and oxygen to be delivered from mother to child. What is the name of this organ? Uterus Placenta Ovary
A scientific theory, such as the theory of evolution, is a hypothesis likely to change. often a political position not related to science. a scientific guess or hunch. a well-founded scientific explanation.
4. Есептендер: 1) √[6]2^6; 2) √[4](-3)^4; 3) -√[6]25^3; 4) √[3]125-√[4](-9)^4; 5) √[5]7^5; 6) √[3](-2)^3 7) (-3 √[3]3)^3; 8) √[5]32-√[6]27^2
your exit tickets for this unit! 1. Name and describe the phases in the water cycle. 2. Compare the 2 places water can go when it rains. 3. What is the difference between permeable and impermeable surfaces? 4. Compare the densities of hot/cold water, and water with different salinities. How will the 5. Describe the movement of ocean currents at the poles and equator. 6. What factors affect the rising and falling of groundwater levels? 7. As the human population increases, how will it affect our access to fresh water? 8. What are the effects of over pumping groundwater? 9. Why are wetlands important? 10. What are the factors that influence flooding?
I want you to look at your notes on mitosis or Figures 7.8 and 7.11 in your textbook (pages 157 and 161, respectively) compare the chromosomal arrangement in the mitotic metaphase and metaphase I of meiosis I . What is the main difference? The homologous chromosomes are arranged horizontally, next to each other, in mitosis and vertically along the middle in meiosis I The homologous chromosomes in mitosis are all identical. There are no homologous chromosomes in mitosis. the homologous chromosomes are arranged vertically along the middle in mitosis and horizontally, next to each other, in meiosis I.
Which chamber of the heart contracts and sends blood into the pulmonary trunk? Left atrium Right ventricle Left ventricle
Multiple Select Question Select all that apply What are two antimicrobial proteins? Interferon Complement Macrophage Mucous membrane Stomach acid
How many nutrients essential for life are there in the nutrient cycle?
3. Find a cell that is in prophase. Prophase is characterized by the dark, spotty nucleus and the absence of nuclear envelope. Asters may also be seen. Draw one cell. - Why is the nucleus stained dark? The nucleus appears dark during prophase because the chromatin condenses into tightly packed chromosomes. - At this stage, each chromosome contains how many copies of DNA molecule? 4. Find a cell that is in metaphase. Metaphase is characterized by the arrangement of dark-stained chromosomes on metaphase plate. Draw one cell. - How many asters should one cell have? - Can you see spindle fibers? 5. Find a cell that is in anaphase. Anaphase is characterized by two somewhat parallel dark bands resulting from separation of sister chromatids. Draw one cell. - What attach to the centromere and pull daughter chromosomes to opposite poles?
What is the purpose of the mechanism of alternative splicing? It increases protein diversity.
Which of the following conditions promotes edema? (a)Consequences of dehydration. If more water than solutes is lost, cells shrink. (b)Consequences of hypotonic hydration (water gain). If more water than solutes is gained, cells swell.
Question 44 Diabetes is a chronic disease in which lack of insulin forces body cells to take in excessive glucose. the body can no longer maintain glucose levels high enough to support body functioning. inadequate intake of dietary carbohydrate prompts hypoglycemia. the body can no longer regulate blood glucose levels within normal limits. Question 45 Which of the following conditions is NOT associated with untreated diabetes? osteoporosis cardiovascular disease kidney failure blindness Question 46 Which of the following is NOT associated with type 2 diabetes?
Question 22 Which is the cessation of the uterine cycle? Menopause Menses Menarche Puberty
Unsaturated fatty acids may be converted into saturated fatty acids by what type of reaction? A acidification B addition C saponification D esterification E hydrogenation
Which tendon contributes to the formation of the oblique popliteal ligament? a) Biceps femoris b) Semimembranosus c) Semitendinosus d) Popliteus
9. The brain area just anterior to the precentral gyrus that selects and sequences basic motor movements into more complex tasks.
Part A Oligodendrocytes share which of the following in common with Schwann cells? They conduct nerve impulses. They release neurotransmitters when stimulated. They are a type of neuroglial cell. They are located in the peripheral nervous system. They are located in the central nervous system. Submit Request Answer
Part A The average length of a transcription unit along a eukaryotic DNA molecule is about 27,000 nucleotide pairs, whereas an averaged-sized protein is about 400 amino acids long. What is the best explanation for this fact? Each amino acid in a protein is encoded by a triplet of nucleotides. Most eukaryotic genes and their RNA transcripts have long noncoding stretches of nucleotides that are not translated. Many genes are subject to alternative RNA splicing. Submit Request Answer
Inoculated plates are incubated upside down (lid down, agar up) to prevent the dripping of condensate onto the surface of the agar, therefore preventing the dispersal of inoculated organisms. True or False True False
Write the net ionic equation for the reaction of magnesium metal with aqueous silver nitrate. Include physical states. net ionic equation:
A test for marijuana usage was tried on 191 subjects who did not use marijuana. The test result was wrong 7 times. a. Based on the available results, find the probability of a wrong test result for a person who does not use marijuana. b. Is it "unusual" for the test to be wrong for those not using marijuana? Consider an event to be unusual if its probability is less than or equal to 0.05. a. The probability that the test will be wrong is approximately . (Type an integer or decimal rounded to three decimal places as needed.)
2. Differentiate between negative pressure and positive pressure and what happens in inhalation and exhalation of the lungs.
Select all of the functions of the liver. detoxify alcohol control entrance of chyme into the duodenum release bicarbonate store glycogen remove bacteria and toxins from the blood synthesize blood clotting proteins store iron and vitamins produce bile
will have mutations that will be expressed and evaluated by natural selection more rapidly. A fruit fly A mouse A bacterium A plant
The is the organ from which the infant receives nourishment. (A) placenta B umbilical cord (C) amniotic sac (D) blastocyte (E) The sac in which the developing infant is contained prior to birth
Put the events in the correct order. 1. Release of P-P from the incoming nucleotide. 2. Formation of H -bond between two nucleotides. 3. O-P bond formed between two nucleotides. 2, 1, 3 3, 1, 2 1,2,3 2, 3, 1
The prime mover of hip extension is the pectineus gluteus maximus gracilis adductor magnus
You are studying the evolutionary relationships of lizards and snakes, turtles, crocodiles and alligators, and birds. This is the group of interest. In this case, mammals are: - ancestor. - outgroup. - homology. - ingroup.
Multiple Select Question Select all that apply Choose all the cranial nerves in which parasympathetic fibers leave the brainstem through. vi VII IX IV III x
The substances that result from the reaction of chemicals together are known as which of the following? Enzymes Products Reactants
A pediatrician wants to determine the relation that may exist between a child's height and head circumference. She randomly selects 8 children, measures their height and head circumference, and obtains the data shown in the table. Complete parts a through e below. Height (inches) Head Circumference (inches) 27 17.3 25.75 16.9 26.75 17.2 24.5 17 28.25 17.5 23.5 17.2 22.25 17.1 29.25 17.4 ordered pairs for height = 23, 28, and 30 that fall on the trendline. Provide the ordered pairs in the form (height, head circumference). The three ordered pairs are (23,17.1),(28,17.3),(30,17.5). (Type an ordered pair. Use a comma to separate answers as needed. Use integers or decimals for any numbers in the expression. Round to one decimal place as needed.) d. Sketch a graph of the trendline equation on the scatterplot. Choose the correct graph below. A. B. C. D. e. Predict a head circumference value for height = 26 in. The predicted head circumference value is in. (Type an integer or decimal rounded to one decimal place as needed.)
Mc Grav 10 of 42 Concepts completed Multiple Choice Question Which is true regarding evolutionary theory? The environment contributes to a change in the DNA and specific traits of an individual.
If the sequence of one strand of DNA is TCGCACCGAT, what would be the sequence of the opposite (complementary) strand? AGCGUCCUA CTATGTTAGC AGCGTGGCTA TCGCACCGAT
Question 8 (1 point) What is the correct SI unit for the measurement of Oxygen consumption; ml . kg^-1 . min^-1 kJ . kg^-1 . min^-1 J.kg ^-1 . min^-1 m / s . kg^-1 . min^-1
High blood pressure: A national survey reported that 34% of adults in a certain country have hypertension (high blood pressure). A sample of 24 adults is studied. Round the answers to four decimal places. (a) What is the probability that exactly 5 of them have hypertension?
Heart disease has both modifiable and nonmodifiable risk factors that contribute to its development. All of the following are lifestyle risk factors for heart disease EXCEPT Multiple Choice sedentary lifestyle cigarette smoking excessive alcohol consumption low-fiber and high solid-fat diet family history and genetic predisposition for heart disease
The abbreviation for hemoglobin is Multiple Choice Hg Hgb HCT CBC
What element is necessary for the production of triiodothyronine (T3) and thyroxine (T4)? calcium potassium iodine magnesium
The population in millions of arctic flounder (a type of fish) in the Atlantic Ocean is modeled by the function P(t)=(7t+96)/(0.8t^2+1), where t is measured in years. 1. What is the initial flounder population? Number million 2. What is P'(8), rounded to 2 decimal places? Units should be consistent with those defined in the initial problem. P'(8)= Number I
Which stage of labor is normally the least painful for women?
(17 of 19) Begins during anaphase, continues through and after telophase. Metaphase Anaphase Telophase Cytokinesis
Eukaryotic cell division is regulated by mitosis glycoprotein synthesis checkpoints chromosomes none of the above
Which of the following hormones is regulated by a positive feedback mechanism? TRH oxytocin TSH thyroxine
Lactose intolerance and sensitivity appear to be a growing phenomenon in this country. Even though many people limit or avoid dairy products in their diets, they seem to still suffer from symptoms. What would account for this fact? What characteristics may predispose individuals to become lactose intolerant and/or sensitive? What dietary options would be feasible for lactose intolerant/sensitive individuals to meet critical nutrient needs such as calcium, riboflavin, and vitamin D? Respond to at least two of your classmates Word Count: 250 minimum
Which statement about clotting factors is true? They are also known as anticoagulants. Most are produced in the spleen. Clotting factors initiate a cascade of reactions. They are identified by roman numerals which indicate the order of the
According to the base-pairing rules in DNA, which of the following must be true of a molecule of DNA? The amount of C= the amount of G The amount of C> the amount of G The amount of C= the amount of T The amount of C < the amount of T
Multiple Choice Question Which combination of sex chromosomes in an embryo leads to embryonic death? XO XYY XXX OY
Which of the following statements regarding physical growth is most likely to be true of John and Judy, both six years old? John is likely to be much taller than Judy, hitting a prepubescent growth spurt earlier than Judy. Both John and Judy's brains are fully developed. John and Judy are done losing their primary teeth. John and Judy have likely begun to lose their primary teeth.
How does transcription differ in eukaryotes and bacteria? Eukaryotic transcription does not require a promoter sequence. Eukaryotic transcription requires more proteins. The initiation stage of transcription is more complex in bacteria. Bacteria have more types of RNA polymerase.
A patient's blood does not agglutinate when either anti-A or anti-B antiserum is added to it. Name the patient's blood type.
Question 6 (2 points) After replication, - one DNA double helix consists of two old strands and one DNA double helix consists of two new strands - each new DNA double helix consists of one old strand and one new strand - each new DNA double helix contains 25% of the old DNA double helix - each new DNA double helix consists of two old strands - each new DNA double helix consists of two new strands Question 7 (2 points) What occurs during DNA replication? - New bases attach to the original sugar-phosphate backbone. - DNA polymerase separates the two DNA strands. - Adenine forms a base pair with either cytosine or guanine.
If asked to point to the place on a model of the brain where subconscious muscular movement is controlled, where would you point? Multiple Choice cerebrum. hypothalamus. medulla oblongata. pons. cerebellum.
Which of the following statements is correct? Multiple Choice Meiosis involves two divisions and produces four nonidentical gametes. Meiosis involves one division and produces two nonidentical gametes. Mitosis involves one division and produces two nonidentical gametes. Mitosis involves two divisions and produces four identical gametes.
Both hypercholesterolemia and Huntington disease display an autosomal (not X- or Y-linked) inheritance pattern.
sustainable crop production integrated pest management [ Choose ] organic GMO [Choose] increased food production [ Choose] Increased access to farmland [Choose] Increased protein to poverty stricken areas [Choose]
4. What are stomata? Notice that stomata is not the same word as stroma, which is something you labeled in the picture you drew above.
The European species likely interbred with Homo sapiens before disappearing about 34,000 years ago. H. heidelbergensis H. rudolfensis H. neanderthalensis H. ergaster
Question 41 (2 points) Which muscle(s) can contract without the need for nervous stimulation? cardiac muscle smooth muscle skeletal muscle smooth and cardiac muscle Question 42 (2 points) Arrange the following list of biochemical events in the correct sequence. (1) An action potential is conducted deep into the muscle fiber by the T tubule. (2) Calcium ions bind to troponin. (3) The membranes of the sarcoplasmic reticulum become more permeable to calcium ions. (4) Calcium ions diffuse into the sarcoplasm around the myofibril. (5) The troponin-tropomyosin complex moves exposing active sites. 1,4,3,2,5 1,3,2,5,4 1,2,3,4,5 1,5,2,3,4 1,3,4,2,5
Why might problems with function of the earliest oral steps in digestion be associated with age-related diseases like Alzheimer's Syndrome and Parkinson's Disease? Select one: a. Both AD and PD have significant stigma association, although education campaigns are working to change this. b. Both AD and PD are associated with brain and neurological problems, and nerve damage directly impinges on the first steps of digestion which occur in the mouth and esophagus. c. Both AD and PD are associated with memory loss and cognitive difficulty. d. As the relative proportion of elderly in the population grows, so, too, do problems with consumer good availability.
Which clinical manifestation is associated with complex partial seizures?
Regular clothing will not allow the penetration of nerve agents, whether they occur in a liquid or vapor form False True An infectious disease is one that is caused by a microorganism, and a contagious disease is one that can be transmitted from one person to another. False True
According to Jean Piaget, middle childhood is a time for thought. metacognitive preoperational formal operational concrete operational
Frozen foods' nutrient content is similar to that of: foods that have undergone extrusion dried foods canned foods fresh foods
A vertebrate that lays a hard-shelled amniotic egg, has feathers for flight and insulation, and is endothermic is called a thecodont, mammal, bird, pterosaur.
Multiple Select Question Select all that apply Which of the following describes the fins of lobe-finned fishes? muscular no muscles fleshy lobe bony rays at the tips
Introns have been shown to do which of the following? Code for enzymes such as endonucleases or reverse transcriptase Stimulate transcription of specific genes Prevent translation of specific proteins through the introduction of early stop codons Give rise to alternative versions of mRNA sequences from the same gene through alternative splicing Catalyze their own removal from a transcript through self-splicing
Refer to the models listed below to find the numbered muscle. List its name, explain the Meaning of its ENTIRE name and provide an action. 1. Latissimus dorsi Meaning: Action: Flexor carpi ulnaris Meaning: Action: Rectus femoris Meaning: Action: