Biology Homework Questions & Answers Archive

Nondisjunction may cause trisomy 21. Turner syndrome. Jacobs syndrome. Klinefelter syndrome. All answers are correct.

Multiple Choice Question How might lipids synthesized in the mitochondria be transferred to other cellular membranes? • Vesicular transport • Lateral diffusion • Lipid exchange proteins Need help? Review these concept resources.

Which two main fuels supply energy for physical activity in the body? Sugar and fatty acids Vitamins and minerals Amino acids and water Protein and vitamin B Folate and fiber

The type of bone that is arranged in a grid-work pattern is known as bone, compact spongy soft trabecular

Determine whether each label describes skeletal or cardiac muscle. Labels (i) All calcium ions from sarcoplasmic reticulum (ii) Cells have single nucleus (iii) Calcium ions from extracellular fluid and sarcoplasmic reticulum (iv) Voluntarily controlled (v) Functions to pump blood (vi) Cells have multiple nuclei

Identify the bone labeled "N" Fibia Tibia Ulna Radius

What type of tissue makes up the epidermis? Nerve tissue Muscle tissue Epithelial tissue Connective tissue

The cytoplasm of the cell contains fluid with dissolved solutes and suspended particles, acts as a barrier to the external environment, contains organelles, contains fluid with dissolved solutes, suspended particles and contains organelles, Contains the genetic material for the cell.

Population Ecology Populations cannot grow if they do not have what the members of the population need to survive. Which of the following is something that might limit the speed at which a population can grow? The lack of available shelter An abundance of food

The structure of a chloroplast is closely tied to its function as the site of photosynthesis. From Biology by Campbell and Reece se 2008 Pearson Education, Inc. Some of the following statements are true for chloroplasts; others are true for mitochondria. Which statements are true for chloroplasts? Select the three that apply. - They have membranous sacs called thylakoids that are surrounded by a fluid called stroma. - Their inner membrane has infoldings called cristae. - They are the sites of reactions that convert solar energy into chemical energy. - Their matrix contains enzymes that function in cellular respiration. - They are the sites of reactions that convert chemical energy from food molecules to ATP. - They contain the green pigment chlorophyll.

Researchers wanted to study whether or not Botox injected under the arms can reduce sweating. Which of these is a matched pairs design? Randomly assign the underarms of some subjects to be injected with Botox, and those of other subjects with salt water. For each subject, one underarm is injected with Botox, and the other with salt water. Submit Question

Which type of selection increases overall genetic variation in a population?

pollen is carried by wind Gymnosperms Bryophytes Angiosperms

Which is NOT an example of homeostasis? Increased estrogen during the menstrual cycle increases the number of progesterone receptors in the uterus. Increased blood pressure in the aorta stimulates mechanisms to lower blood pressure. Increased blood sugar stimulates the release of a hormone from the pancreas that stimulates the liver to store blood sugar. Decreased body temperature stimulates a neural response that increases body temperature. Increased blood calcium levels stimulates the release of a hormone that lowers blood calcium levels.

(a) Find the odds in favor of drawing a black card. (b) Find the odds against drawing a face card that is a diamond.

A structure that helps prevent food from entering the pharynx prematurely is the epiglottis.

Equilibrium: Where Supply Meets Demand - End of Chapter Problem When British regulators were forced to suspend the license of a flu vaccine plant in Liverpool operated by the Chiron Corporation due to concerns over bacterial contamination, the number of flu vaccines available in the United States market decreased by 48 million doses. This was nearly half of the total supply of vaccines in the market. a. Shift the appropriate curve or curves to show this dramatic change in the market for flu vaccines. Market for flu vaccines b. As a result of the decline in available flu vaccines, the equilibrium price should and the

The study of normal body structures is called physiology anatomy pathology microscopy biology

Question 13 The species of modern humans is called - Homo erectus - Homo sapiens - Homo habilis - early Homo - Australopithecus

Test 3 Ch 19 The opening and closing of the heart valves is caused by Multiple Choice contraction and relaxation of papillary muscles that pull on heart strings. contraction of the smooth muscle in the walls of the great vessels leaving the heart. action potentials within the cusps of the valves. pressure changes of alternating contraction and relaxation during the cardiac cycle.

Almost all enzymes are 1. DNA 2. lipids. 3. carbohydrates. 4. proteins. 5. amino acids. 3 points

The active site of an enzyme 1. never changes shape. 2. forms no chemical bonds with substrates. 3. determines, by its structure, the specificity of the enzyme. 4. looks like a lump projecting from the surface of the enzyme. 5. changes the ΔG of the reaction.

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Look at the graph below. It shows how three runners ran a 100-meter race. Which runner stopped for a rest?

La glándula tiroides y la suprarrenal están clasificadas como tejido:

Identify characteristics of a secondary immune response: Select all that apply - It occurs after the second and subsequent exposures to an antigen. - Antibodies first appear within hours, peaking at day 3. - IgG antibodies are formed first.

About 70% of the ventricle filling is achieved passively without the contraction of the atria. True or False

What process results in the release of stored glucose? Multiple Choice Glycogenolysis Glycogenesis Glycolysis

Lecture Ch 13 HW: The Peripheral Nervous System Multiple Choice Question 13.31 Part A Which muscle or muscle group is served by the femoral nerve? gastrocnemius hamstring group quadriceps femoris group gluteus maximus

Question 4 (1 point) Listen What are the benefits of consuming whole grains? Whole grains are good sources of fiber, vitamins, phytochemicals, and more. Whole grains promote desirable blood glucose levels. Whole grains support weight loss and decreased disease risk. All of the choices are correct. Previous Page Next Page Page 4 of 15

A distinguishing characteristic of red algae is that they lack and

Question 33 3 pts Factors that help to perpetuate temperate grasslands, such as the American prairies, and prevent them from becoming woodlands include large numbers of cacti. periodic drought and fires. mild winters with very little rain. poor soil.

Which structure in a ciliate may contain up to 1000 copies of each chromosome?

The use of the fingers for dissection purposes is considered sharp dissection.

Find and describe the location of the radial tuberosity.

A relative dating principle used to determine whether fault M is younger or older than layer I could be principle of fossil succession principle of inclusions principle of lateral continuity principle of superposition principle of cross cutting relations principle of original horizontality

Why do we use model organisms in science? Choose all that apply Model organisms are easier to maintain and manipulate in the lab Model organisms were designed to be functionally similar to humans Some of the genes found in model organisms are similar to genes in humans Experiments that would be impossible or unethical to do on humans are possible with model organisms Model organisms are different from humans, and used as the counter-example to humans

How would the membrane lipid composition of fish found in very cold waters compare with that of a warm-blood mammal like a polar bear? (Select all that apply.) A fish living in cold waters would have more unsaturated fatty acids in their cell membranes because those fatty acids pack together less tightly and remain fluid at cooler temperatures. A warm-blooded animal like a polar bear would have more cholesterol, since this would make cell membranes more fluid at higher temperatures and therefore helping them to stay intact.

Select all of the following that are functions of the blood in the human body. Check All That Apply transports oxygen, nutrients, wastes, hormones produces heat defends the body against pathogens produces hormones defends the body against blood loss excretes waste such as carbon dioxide plays an important role in homeostasis by regulating body temperature

In which reproductive cycle of the virus does the viral DNA integrates with the host DNA? Apoptosis Cycle Life Cycle Lytic Cycle Lysogenic cycle

All of the statements regarding archaea are true EXCEPT - they reproduce by binary fission. - they contain a rigid cell wall. - they contain peptidoglycan in their cell walls. - they often grow in extreme environments. - they are found as single cells.

A trait is a discrete with a known quality.

Select all that apply Select all the options that indicate that the spleen is a reservoir. Platelets Lymphocytes Eosinophils Erythrocytes

Why do these organisms appear as different colors?

(a) What was the greatest amount of rainfall in a month? (b) When did the greatest decrease in rainfall occur? July to August August to September September to October October to November

The eruption of Krakatau in 1883 is infamous for: Multiple Choice blowing the entire island apart. none of these events. the loudest sound ever heard. all of these events. a tsunami that killed 36,000 people.

Adenine Cytosine Guanine Uracil Thymidine

Lymphatic nodules are located in the of the lymph node. capsule cortex medulla

Which line of defense consists of external barriers?

During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. What is the frequency of times the limit was exceeded by less than 6 items? Answer: times

Sleep walking and sleep talking are most likely to occur during sleep. stage 2 stage 3 REM stage 4

What is necessary for optimal healing to occur when bones are broken? Choose three. Immobilization Time Alignment Exercise

Which of the following pairs are the best examples of homologous structures? owl wing and hornet wing bat wing and bird wing bones in the bat wing and bones in the human forelimb eyelessness in the Australian mole and eyelessness in the North American mole

Important differences between Taenia solium and Taenia saginata include all of the following EXCEPT Taenia does not cause cysticercosis Taenia saginata does not have a hook in the scolex intefinediate host is cattle in Taenia saginata intermediate host is pork in Taenia saginata

The following question refers to this phylogenetic tree, depicting the origins of life and the three domains. Horizontal lines indicate instances of gene or genome transfer. A possible phylogenetic tree for the three domains of life. Which of these processes can be included among those responsible for the horizontal components of the figure? point mutations binary fission endosymbiosis mitosis

Adapted from Biology by Campbell and Reece Pearson Education, Inc. Place the terms in the appropriate blanks to complete the sentences. Not all terms will be used. negative 1. This heating system maintains room temperature at or near a particular value, known as the set point. sensor increases 2. You open the window, and a blast of icy air enters the room. The temperature drops to 17 degrees Celsius, which acts as a stimulus to the heating system. stimulus 3. The thermostat is a sensor that detects the stimulus and triggers a response.

What process was invented by Pasteur to keep liquids and foods at a certain temperature to prevent spoilage?

A small organ found along the course of a lymphatic vessel that filters the lymph and functions as an activation site for B and cells is called a lymph.

In the equation (r N(1-fracNK)) what does (r) represent? (A) Population size and carrying capacity together (B) Carrying capacity (C) Intrinsic growth rate (D) Population size (E) None of these are correct

Which gives epithelial cells the ability to withstand significant mechanical stress? Occludins Tight junctions Connexons Desmosomes Gap junctions

Find P (musician is a female).

Intercalated disks are specialized connections only found in the following muscle(s): cardiac muscle skeletal muscle both none of the above

Homework Biology 1001 Oral exam 1 Ellen Borteh 09/27/24 6:13 PM Completed: 20 of 36 My score: 18.83/36 pts (52.31%) Save Part A How many fatty acids are in a phospholipid? Clear all Check answer Sep 27 6:13

Which material preserves fossils best? Bedrock Amber Clay Iron

Which pedigree symbol is used to represent a female carrier of a recessive X-linked trait?

coordination

Flowering plants, classified in the division (or phylum) , are a monophyletic clade comprised of almost 300,000 described living species, which is second in species diversity among all phyla after a. Cycadophyta, chordates b. Gnetophyta, insects c. Coniferophyta, chordates d. Magnoliophyta, insects

Humoral defense of the body is an immune system function mediated by: lymphocytes. antibodies. mucous. antigens.

The structure of bone tissue suits the function. Which of the following bone tissues is adapted to support weight and withstand tension stress? compact bone trabecular bone irregular bone spongy bone Submit Request Answer

O mylabmastering.pearson.com Post-Lecture - Chapter 5 - Homework Problem 5.72 - Enhanced - with Feedback 14 of 18 Reviex I Constants I PeriodicTable The following table contains some standard enthalpies of formation, ΔH°f, at 298 K. Substance Formula ΔH°f (kJ / mol) --------- Carbon dioxide CO2(g) -393.5 Carbon monoxide CO(g) -110.5 Methane CH4(g) -74.80 Propane C3H8(g) -103.85 Water H2O(l) -285.8 Water vapor H2O(g) -241.8 Part A Many portable gas heaters and grills use propane, C3H8(g) Using enthalpies of formation, calculate the quantity of heat produced when 11.0 g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming. Express the heat in kilojoules to three significant digits.

The step in designing a customer value-driven marketing strategy in which a company divides a market into distinct groups of buyers is known as market segmentation.

4. ALGAE Ronald owns a fish tank in the shape of a rectangular box. The tank is 18 inches high, 14 inches deep, and 30 inches long. Ronald went on a one-month vacation. When he returned he found that the sides and bottom of his fish tank were covered with algae. What is the area that was covered?

The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is Multiple Choice metaphase. " interphase. anaphase. prophase.

Describe the function of the chordae tendineae and the papillary muscles. What is the significance of the difference in thickness between the wall of the aorta and the wall of the pulmonary trunk? List the correct pathway through which blood must flow in relation to the region of the heart. Assume blood is currently in a vena cava and will eventually enter the aorta. Include the major blood vessels (arteries and veins) attached directly to a heart chamber, the four heart chambers, and the four heart valves in your list.

Question 8 (Mandatory) (2 points) You are reading an article about an outbreak of an infectious disease. Which of the following would you recognize as the full scientific name of the organism causing the disease, just because of the way that it's written? Anthrax staphylococcus Bacillus anthracis E. Coli

The causes the stage to move upward or downward. Select one: a. mechanical stage b. iris diaphragm c. objective lens d. coarse adjustment knob Sally flips the switch to turn on the light in her bedroom and the light does not come on. She notices that all the other lights in the house work. She wonders if the light bulb in her room has burned out. Sally gets a new light bulb and uses it to replace the old light bulb. She turns on the switch and the light works. Thinking the light bulb is bad is which of the following? Select one: a. Theory b. Experiment c. Conclusion d. Observation e. Hypothesis When you over exert yourself in the gym your muscles begin to burn. The burning sensation is because the build up of acid in your muscles cells. What is the primary cause for the build up of that acid?

Which statement describes the muscle response at a stimulation interval of 120 ms (about 8 stimuli per second)? The muscle was only partially relaxed before each stimulus, and the contractions generated more force than individual twitches. The muscle was only partially relaxed before each stimulus, and each contraction generated the same force as an individual twitch. The muscle had time to completely relax before each stimulus, and each twitch generated the same force. The muscle was in the process of contracting when each stimulus arrived, and the contractions generated more force than individual twitches.

The volume of air inhaled or exhaled during a respiratory cycle is called the volume.

Multiple Choice Question What is the role of the epiglottis? Covers the posterior nasal aperture when breathing Covers the glottis when swallowing Covers the esophagus when breathing Covers the glottis when breathing

True brachiation is found in: Old World monkeys chimpanzees and gorillas New World monkeys gibbons and siamangs

Indicated with the letter B in this figure are the digital sheaths.

Of the following events from the light reactions of photosynthesis, which would be expected to occur first? A Light-induced reduction of the primary electron acceptor in the reaction center of PS II takes place. (B) ATP synthase makes ATP (C) NADP+ gets reduced (D) Protons are pumped into the thylakoid space

Which of the following terms is NOT associated with connective tissue? - widely spaced cells - exocrine gland - collagenous fibers - matrix

Where does calcium attach to the contractile protein complex? myosin actin troponin tropomyosin

Which of the following is true about veins? Veins are considered blood reservoirs Venous contain large pressure gradients Veins have thick tunica media Venous valves form from the tunica media

The resting potential of a cell is negative because at rest there is an excess of K+ inside the cell, and the membrane is permeable chiefly to K+.

The cell membrane has many functions. One of the most important is facilitating the passage of molecules into and out of the cell. Some molecules can freely pass through the membrane, while others require a channel in order to enter or leave. Which of the following molecules will pass most freely through the cell membrane? Oxygen Glucose Insulin Water Na+

The basic structural framework of the plasma membrane is primarily made of: cholesterol molecules glycoproteins integral (transmembrane) proteins peripheral proteins phospholipids

The apocrine sweat glands are not the primary gland involved in thermoregulation.

Identifique el grupo al que pertenece esta base nitrogenada en el ARN. Seleccione una: A. Timina B. Purina C. Pirimidina D. Citosina E. Uracilo

Consider the stereoisomers (A-E) drawn below: Which structure is an enantiomer of structure A? structure B structure C structure D structure E

3. At which of the following checkpoints is the DNA checked for damage and, if damage is present, the cell is placed in G0 phase? a. M c. G2 b. G1 d. None of these are correct. 4. Where is the checkpoint that assesses the DNA for damage? a. G1 c. G2 b. S d. M 5. Which of the following act as the brakes of the cell cycle and prevent cells from dividing too quickly? a. oncogenes b. proto-oncogenes c. cyclins d. tumor suppressor genes

Bones such as the carpals that have the same length and width are classified as bones.

Endangered populations typically have a small number of individuals and little genetic variation. Which statements accurately describe the relationship between evolution and genetic variation in an endangered population? Select all that apply. - Genetic drift can lead to allele fixation, and thus reduce genetic variation in populations. - Gene flow between populations tends to increase when genetic variation is low. - Natural selection can decrease genetic variation by favoring alleles that provide the highest fitness. - Mutation rates typically increase when genetic variation is low.

2. Durante el ciclo ovárico en una mujer sana, ¿cuál de los siguientes estímulos provoca directamente la menstruación? A) El aumento de los niveles plasmáticos de estrógenos. B) El descenso de los niveles plasmáticos de la hormona progesterona. C) La disminución de los niveles plasmáticos de la hormona foliculoestimulante. D) El aumento de los niveles plasmáticos de hormonas liberadoras de gonadotrofinas.

1. Peel a section of thin onion skin membrane and place on slide. 2. Place a few drops of iodine solution on the onion skin and cover with a cover slip. 3. Observe and sketch under lower and higher magnification. 4. Label - Cell Wall, Nucleus 1.Why does a specimen viewed under the microscope need to be thin? 2. Why did we add methylene blue to the cheek cells? 3.What structures are visible in your cheek cells? 4. What structures were visible in the Elodea cell? 5. What are some major structural differences between the plant and

Question 18 1 pts The figure below illustrates a eukaryotic cell. Which of the following best describes how the three structures indicated by the arrows work together? To catabolize nutrients and produce ATP for intracellular energy storage To synthesize all ribosomal proteins To synthesize and isolate proteins for secretion or for use in the cell To synthesize lipids and modify toxic substances in order to render them harmless

Chalk forms from - magnesium rich fluids that chemically alter limestone bearing reefs - evaporation of magnesium rich waters - the hard parts of microscopic organisms that accumulate on the sea floor - direct precipitation from seawater

Female Reproductive System

Two individuals start the same training program at the same time, but one is able to grow muscle faster and larger than the other. What is the least likely explanation for this? A. One individual was born with more muscle fibers. B. One individual has a more consistent training schedule. C. One individual is consuming a healthier diet. D. One individual has a more intense training schedule. Please select the best answer from the choices provided. A B C D

Question 18 of 25 Young sea turtles have many natural predators. Which adaptation helps sea turtles successfully reproduce? A. Having eggs that attract predators B. Producing a large number of eggs C. Spending years caring for offspring D. Caring for one offspring at a time

What is the difference between false and true ribs? How many of each are present in humans?

Züchtungsmethoden Züchtung beruht auf der Auswahl von Individuen für die Fortpflanzung über viele Generationen hinweg. So entstanden Tierrassen und Pflanzensorten für die Ernährung sowie Die Entstehung des Saatweizens 1 Stationen auf dem Weg zum Saatweizen (A, B, D Chromosomensätze) Aus archäologischen Funden und durch Vergleiche von Genomen konnte die Entstehung des Saatweizens rekonstruiert werden. Die ersten angebauten Weizenarten waren Einkorn und Emmer. Das Herkunftsgebiet der Getreidearten ist der Vordere Orient. Lange Zeit blieb der Anbau von Weizen hinter dem von Einkorn und Emmer zurück. Er im 11. Jahrhundert etablierte sich Weizen, der sich besser zum Brotbacken eignet. Triticale ist ein Hybride aus tetraploidem Weichweizen (4n) oder hexaploidem Weichweizen (6n) mit diploidem Roggen (2n). Sie tritt auch unter natürlichen Bedingungen auf. Die Kreuzungen sind jedoch meist unfruchtbar. Um eine fruchtbare Form des Triticale zu erhalten, behandelte man das Kreuzungsergebnis mit Colchicin und verhinderte so die Trennung der Chromosomenpaare während der Meiose. 2 Eigenschaften von Roggen, Weizen und Triticale Haustierrassen und Zierpflanzen. Die Individuen unterscheiden sich in der Anzahl der Chromosomensätze. Ein- und Mehrnutzungsrassen Alte Hühnerrassen bringen Bauern doppelt Glück. Früher hielten Bauern meist Hühner, die zweierlei taten - ausreichend Eier legten und Fleisch lieferten. Das soll sich wieder ändern. Zwei Dutzend beigefarbene Hühner und schwarz-bunte Hähne toben durch ihren Auslauf unter alten Eichen, scharren auf dem Kröter Hof im Wendland nach Fressbarem, verstecken sich im Brennnesselfrast. Die Lachshühner sind eine Zweinutzungsrasse. Das heißt, die Hennen haben eine passable Legeleistung, und die Hähne setzen ordentlich Fleisch an. In der üblichen bäuerlichen Hühnerhaltung waren die Rassen dann entweder auf Eier oder Fleisch züchtet. Das führte zur Praxis, dass männliche Küken der drei bis vier weltweit verbreiteten Legehennenlinien gleich nach dem Schlüpfen zu Tierfutter zerhäckselt oder vergast werden. Erste Projekte versuchen, den Missstand zu beseitigen. So lässt die in diesem Jahr gegründete Bruderhahn Initiative des Bauckhof in Klein Sustedt bei Uelzen und fünf weiterer Höfe die männlichen Nachkommen der Legehennen am Leben und macht aus ihnen Masthähnchen. Die Höfe und drei beteiligte Naturkostgroßhändler nehmen einen Aufschlag von vier Eurocent pro Ei und finanzieren damit die Aufzucht der Hähnchen. Sie nennen ihren Aufschlag "Vier Cent für die Ethik". Die Bruderhahn Initiative arbeitet derzeit noch mit einer der industriellen Hybrid-Legerassen. Carsten Bauck will mehr: „Unsere Hähnchenmast mit einer modernen Legerasse ist gewissermaßen eine Brückentechnologie, ein Übergang zu einer modernen Zweinutzungsrasse. Die traditionellen Rassen sind zu naturnah, um in den heutigen Vermarktungsrhythmus zu passen. So legen sie zwischen Weihnachten und Ostern, wenn die Nachfrage am größten ist, nur wenige Eier." (Die Welt 10.11.2012) AUFGABEN 1 Beschreiben Sie die Entstehung des Saatweizens unter Verwendung von Abb. 1. 2 Erläutern Sie die Zuchtziele bei Triticale 3 Erklären Sie anhand von Abb. 3, dass erst durch die Chromosomenverdopplung bei der Erzeugung von Triticale eine nutzbare Getreideart entstanden ist. Mutationszüchtungen Bei der Züchtung wählt man zwischen Individuen, die sich in ihren genetisch bedingten Merkmalen unterscheiden. Diese Unterschiede beruhen auf zufällig auftretenden Mutationen. Unter Mutationszüchtung im engeren Sinne versteht man die Auslösung von Mutationen durch Röntgenstrahlung oder mutagene Chemikalien wie EMS (Ethylmethansulfonat) bei Pflanzen und die anschließende Selektion der Mutanten unter den Nachkommen. Auf einer solchen Mutationszüchtung beruht die Erzeugung einer Kartoffelsorte, mit der Amylopektin für die industrielle Verwertung produziert wird. Für eine Reihe von Anwendungen ist die verzweigte Form der Stärke, das Amylopektin, geeigneter als die unverzweigte Amylose. 4 Kartoffelsorte für die Amylopektin-Produktion AUFGABEN 6 Erklären Sie, dass bei der Mutationszüchtung unter Abertausenden von Mutanten nur selten Formen mit positiv veränderten Eigenschaften auftreten. 7 Im Gegensatz zur Gentechnik werden bei der Mutationszüchtung keine Fremdgene in Lebewesen übertragen. Deshalb sind entsprechende Lebewesen oder Produkte daraus nach dem Gentechnikgesetz nicht kennzeichnungspflichtig. Nennen Sie mögliche Argumente, warum Kritiker dieses Vorgehen dennoch ablehnen könnten.

Which of the following would the nurse expect to assess if a patient has a lesion of the sympathetic nervous system? a) Bilateral dilated pupils b) Unilateral dilated pupil c) Argyll Robertson pupils d) Constricted pupil unresponsive to light

Which structure is a histone? a. Structure A b. Structure B c. None of the above

Which mode of inheritance is characterized by the presence of affected individuals in every generation? Autosomal dominant (AD) Autosomal recessive (AR) X-linked recessive (XR) X-linked dominant (XD)

Question 80 (1 point) Listen Invisible fats include the fats in: margarine. fried foods. shortening. sour cream.

A ship carrying 1000 passengers is wrecked on a small island from which the passengers are never rescued. The natural resources of the island restrict the population to a limiting value of 5740, to which the population gets closer and closer but which it never reaches. The population of the island after time t, in years, is approximated by the logistic equation given below, Complete parts (a) through (c). P(t) = 5740 / (1 + 4.74 e^(-0.4 t)) a) Find the population after 15 years. (Round to the nearest integer as needed.)

What is a phospholipid with carbohydrates attached to it called? Glycolipid Glycoprotein Steroid Phosphoglucose

Both halotolerant microbes and halophiles require elevated concentrations of NaCl for growth.

The value of k which makes the matrix [9 -2 -3; -8 1 -8; 7 k 4] singular is k =

Microbes that grow optimally between pH 5.5-8.0 but are inhibited above and below this range

What ion enters a neuron causing depolarization of the cell membrane? Select one: a. PHOSPHATE b. POTASSIUM c. CHLORIDE d. SODIUM

In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin? It absorbs vitamin C so that the skin will not be subject to diseases. The cells of the epidermis store glucose as glycogen for energy. It aids in the transport of materials throughout the body. It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism.

The force driving simple diffusion is , while the energy source for active transport is .

Identify a reason why cosmetologists should study and have a comprehensive understanding of haircutting. Select the correct response: because haircutting is the basic foundational skill upon which all hair designs are built because they are licensed to diagnose, treat, prescribe, or work on unhealthy hair and perform any service required in the process because haircutting services are listed under a podiatry license, and performing procedures that are listed under any podiatry license is a primary responsibility of cosmetologists because they are required to inform clients about the parts of the hair that will be affected by haircutting

Extending a joint beyond the zero position is always an abnormal movement.

During flu season, the influenza virus infects many people. During infection, the virus binds to proteins on the outside of a cell and tricks that cell into allowing the virus to enter the cell. Once inside, the virus infects the cell and forces the cell to make more viruses that can then go on to infect more cells. What type of cell transport is the virus using to get into the cell? exocytosis phagocytosis receptor-mediated

All of the following are true of the Rb gene, EXCEPT: Rb mutation of one allele causes retinoblastoma. Rb normally inhibits growth. Rb mutation is common to many types of cancer. Rb is a tumor suppressor which inhibits trascription activity.

Which characteristics are associated with oily skin types? Select the correct response: overproduction of sebum, clogged pores, and open and closed comedones enlarged and clogged pores and comedones on the forehead, nose, and chin insufficient lipid activity and pores that are not visible to the naked eye few imperfections, no sensitivities, barely visible pores, and a radiant complexion

Triglycerides

Dye injected into a plant cell might be able to enter an adjacent cell through a gap junction a tight junction a cell wall plasmodesmata a microtubule

For part 2 of the experiment, the contents of which test tube is disposed of in the HEAVY METALS waste container?

Select all the organisms that are members of domain Eukarya. More than one option may be correct. multicellular protists bacteria archaea fungi animals unicellular protists plants

Compare and contrast the epidermis and dermis. Be sure to discuss both structure AND function. Describe AT LEAST TWO (2) similarities and AT LEAST THREE (3) differences.

Which of the following statements accurately describes glycolysis? Multiple Choice 1. Glycolysis uses no molecular oxygen and occurs in the mitochondria. 2. Glycolysis uses molecular oxygen; however, it occurs in anaerobic environments. 3. Glycolysis uses no molecular oxygen; however, it can occur in aerobic environments. 4. Glycolysis uses molecular oxygen and occurs in aerobic environments. < Prev 38 of 50 Next >

Multiple Cholce Question Which aspect of antibiotic resistance development in microbes is depicted in this image? Antibiotics cause individuals to mutate as antibiotic material is inserted into bacterial cells. Random genetic mutations create antibiotic-resistant individuals that survive and multiply to develop into an antibiotic-resistant colony. Conjugation among different types of bacteria creates mutatedresistant genes spreading antibiotic resistance within a colony.

Question 4 1 pts As grapes ripen: The acidity level and the sugar level both drop The acidity level and the sugar level both increase The acidity level increases and the sugar level drops The acidity level drops and the sugar level increases

The assessment technique that will vary the most due to human error is height to waist to height ratio

Basal bodies

Question 7 fats are found in partially hydrogenated vegetable oils. Saturated Trans fats Unsaturated Question 8 Saturated fats and trans fats should be limited in our diet. True False Question 9 Unsaturated fats are good for you. Which food listed has primarily unsaturated fat? Eggs Bacon

If involution of the animal pole cells in the frog did not occur in gastrulation what would be the consequence? ectoderm would not form properly blastocoel would be destroyed archenteron would not form mesoderm would not form properly

In a population where allele frequencies were initially measured as 50% A and 50% a, subsequent measurements taken many generations later reveal the same frequencies of 50% A and 50% a. What is the most likely explanation for this outcome? - Genetic drift caused a change in allele frequencies. - The population is in a state of genetic equilibrium. - Selective pressures led to a shift in allele frequencies. - Mutations introduced new alleles into the population. - None of these is correct.

An allele refers to alternative versions of a gene that codes for the same trait (for example: eye shape). True False

What is the total magnification of a specimen using the 40 X objective?

Question 15 (2.5 points) If the respiratory system fails, which other body systems will eventually fail? - Circulatory and digestive - Circulatory, nervous, and digestive - All body systems - Genitourinary, nervous, and musculoskeletal

Bone growth in which the bone increases in diameter is called

Foods rich in vitamin C generally include: - citrus fruits

How is water different from saline in terms of its tonicity? In this scenario, what effect on the residual malignant cells is the surgeon trying to achieve by use of the sterile water? Compare and contrast the osmotic reactions that occur between eukaryotic and prokaryotic cells when placed in hypertonic or hypotonic solutions. Discuss the other differences between eukaryotic cells and prokaryotic cells.

The table below shows the results of a survey that asked 1056 adults from a certain country if they favored or opposed a tax to fund education. A person is selected at random. Complete parts (a) through (c). - Support Oppose Unsure Total Males 151 323 11 485 Females 245 302 24 571 Total 396 625 35 1056 (a) Find the probability that the person opposed the tax or is female. P (opposed the tax or is female) = .847 (Round to the nearest thousandth as needed.) (b) Find the probability that the person supports the tax or is male. P (supports the tax or is male) = .691 (Round to the nearest thousandth as needed.) (c) Find the probability that the person is not unsure or is female. P (is not unsure or is female) = (Round to the nearest thousandth as needed.)

What shape is the humerus? Short Flat Irregular Long

Which statement correctly describes the origin of lymph fluid? Lymph is secreted into the lymph vessels. Lymph is fluid collected from arteriovenous anastomoses. Lymph is excess tissue fluid formed from plasma that has leaked from capillaries Lymph is collected from fluid that accumulates in veins as blood slowly circulates back toward the heart. Submit Request Answer

Review Transcription produces which of the following? mRNA rRNA tRNA mRNA and tRNA mRNA and rRNA mRNA, tRNA, and rRNA are all produced by transcription. Submit Request Answer Part B

A survey at Pizza Hut showed that 53 people like sausage pizza, 29 people like Hawaiian pizza, and 14 people like both sausage pizza and Hawaiian pizza. How many people like either sausage pizza or Hawaiian pizza? 82 96 68 67

The talus, calcaneus, navicular, cuboid, and lateral, intermediate, and cuneiform bones are all part of the foot.

Osteoblasts are , whereas osteocytes are Multiple Choice bone-forming cells; bone-dissolving cells bone-forming cells; mature bone cells mature bone cells; bone-forming cells bone-dissolving cells; mature bone cells

Atom Cell Tissue Organ Organ system Organism

UV radiation is used extensively to destroy microbes in the air, drinking water, food items

A eukaryotic cell contains many compartmentalized organelles that organize its interior. Each organelle is a discrete unit surrounded by a membrane and has a specialized function. Other structures, such as ribosomes or the cytoskeleton, are not surrounded by a membrane. The generalized animal cell shown is colored so that the features can easily be distinguished from each other. Label each structure with its function. Choose the best answer for each structure. protein transport out of cell

Which is a small, membrane-bound sac that functions in storage and transport within a cell? a vesicle a peroxisome the endoplasmic reticulum a ribosome

Select the phrases that describe the plasma membrane. - creates a barrier between the inside and outside of the cell - maintains the correct ion concentration inside the cell

Endotoxin Multiple Choice determines bacterial shape. is found in Gram-positive cells. is toxic due to the effects of the peptide side chains. consists of lipopolysaccharide. may have different effects depending on the bacterial species.

The sample space listing the eight simple events that are possible when a couple has three children is bbb, bbg, bgb, bgg, gbb, gbg, ggb, ggg. After identifying the sample space for a couple having four children, find the probability of getting four girls and no boys. Identify the sample space for a couple having four children.

This tissue is found in areas subject to friction, such as the mouth or skin surface: pseudostratified stratified squamous simple squamous transitional simple columnar

Match the step of viral replication on the left with what is happening during that stage on the right. (i) Instructions attachment penetration synthesis assembly release new viruses depart from the host cell host cell produces viral nucleic acids and proteins new viruses are put together from newly produced protein coats and nucleic acids viral nucleic acid released inside host cell virus binds to cell surface

Question 12 Which of the following would most likely increase the demand for peanut butter? a decrease in the price of jelly, a good that is often used with peanut butter the discovery that excessive consumption of peanut butter is harmful to one's health crop failures that raise the price of peanuts the invention of a new product that consumers think is a good substitute for peanut butter Question 13

Identify the highlighted bone.

Select all that apply Not all mRNA molecules are equally stable; select all of the ways that this can affect gene regulation. The protein that an mRNA encodes may be destroyed. An mRNA molecule may be degraded before it is translated. An mRNA molecule may be degraded before it is transcribed. An mRNA molecule may persist long enough to be translated many times.

Standard Deviation Question 14, 5.4.13-T HW Score: 31.43%, 165 of 525 points Save Part 2 of 3 Points: 0 of 15 A livestock cooperative reports that the mean weight of yearling Angus steers is 1123 pounds. Suppose that the weights of all such animals can be described by a Normal model with a standard deviation of 95 pounds. a) What percent of steers weigh over 1050 pounds? b) What percent of steers weigh under 1200 pounds? c) What percent of steers weigh between 950 and 1100 pounds? a) 77.9% of steers have weights above 1050 pounds. (Round to one decimal place as needed.) b) % of steers have weights below 1200 pounds. (Round to one decimal place as needed.)

Which layer of the epidermis is found only on the palms of the hands and the soles of the feet? stratum corneum stratum lucidum stratum basale stratum spinosum

The nurse is caring for a 5 -year-old child in the outpatient clinic. The mother reports that the child attends a daycare facility four days out of the week and that recently a message was sent home that a child in the group had been diagnosed with the flu. The mother reports the child feeling "hot and cold," and complaining of a headache and a sore throat for approximately two days prior to this visit. Taking into account the child's most likely exposure to the influenza virus, as well as being diagnosed with uncomplicated influenza, when will the child most likely begin to experience symptom improvement?

QUESTION 5 What can be said about an animal that has the genotype BB? Select all that apply. They have two recessive variants of the gene. 100% of their offspring will inherit the dominant form of the gene. They are homozygous for this gene. The phenotype will be the trait associated with the recessive allele. QUESTION 6 What term describes an allele that is displayed phenotypically only if an individual has two copies of the allele? heterozygous recessive dominant homozygous

Multiple Choice Question Gene expression is the production of an RNA molecule or protein. a lipid or nucleic acid. a carbohydrate or protein. a protein or DNA molecule.

A lily (a monocot) would have vascular tissue arranged in a ring. flower parts in threes. two cotyledons. netted leaf veins.

A(n) is the DNA of a bacteriophage virus that is inserted into the host chromosome during lysogenic infection. - capsule - polysome - prophage - envelope

Hide Question 8 of 10 A deoxyribose linked to a thymine is referred to as a: purine nucleotide. nucleotide. purine nucleoside. nucleotide or purine nucleotide. nucleoside.

What is the meaning of the prefix in the term triceps brachii? Multiple Choice laceration avulsion fracture muscle three

The genes present on the chromosome are the and the actual bodily traits and characteristics that we see are the

Select the correct name Elastic Cartilage Connective Tissue of this tissue, and [Select] in this tissue.

Select the correct name of this tissue, and what is the name of the cell at the pointer.

What level of protein structure is shown in the picture? Quaternary Primary Tertiary Secondary

5'-GAATCC-3' 3'-CTTAGG-5' 5'-CCTTCC-3' 3'-GCAAGG-5' 5'-AGGTCC-3' 3'-TCCAGG-5' 5'-GGATCE-3' 3'-CCTAGG: 5'

Dermis 1. : Subcutaneous fatty layer Hypodermis Epidermis 2. : Contains sensory receptors, blood vessels, and nerves 3. : Protective outer layer

The primary dye in the Gram stain is: - Gram's iodine - crystal violet - ethyl alcohol (ethanol) - safranin

The reverse of endocytosis is

The two main categories of square square are endocytosis and exocytosis.

Which of the following is a metabolic function of skin? elimination of nitrogenous wastes cutaneous sensation body temperature regulation synthesis of a vitamin D precursor

Question 5 1 pts Indicate the way in which alcohol affects bacterial cells. It coagulates proteins. Oxidation It causes mutations. It disrupts peptidoglycan.

Which radioisotope is used to treat leukemia and lymphomas? A) Xenon-133 B) Phosphorus-32 C) Iridium-192 D) Thallium-201

Which type of cell or cellular structure is not found in the epidermis? pain receptors dendritic cells keratinocytes melanocytes

Biology

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