Questions: Which two of the following applications are best performed with a phase-contrast microscope? Detecting bacterial endospores Studying microbial motility Detecting fluorescently-labeled structures Interpreting the Gram stain

Which two of the following applications are best performed with a phase-contrast microscope? Detecting bacterial endospores Studying microbial motility Detecting fluorescently-labeled structures Interpreting the Gram stain

Solution

failed
failed

The applications best performed with a phase-contrast microscope are:

  1. Studying microbial motility
  2. Detecting bacterial endospores

Explanation for each option:

  1. Studying microbial motility: The answer is correct. Phase-contrast microscopy is particularly useful for observing live cells and their movements without the need for staining, which can kill or alter the cells. This makes it ideal for studying microbial motility.

  2. Detecting bacterial endospores: The answer is correct. Phase-contrast microscopy enhances the contrast of transparent and colorless structures, such as bacterial endospores, making them more visible without staining.

  3. Detecting fluorescently-labeled structures: The answer is incorrect. Fluorescence microscopy, not phase-contrast microscopy, is specifically designed for detecting fluorescently-labeled structures.

  4. Interpreting the Gram stain: The answer is incorrect. The Gram stain is a differential staining technique that is best interpreted using bright-field microscopy, not phase-contrast microscopy.

In summary, the best applications for a phase-contrast microscope from the given options are studying microbial motility and detecting bacterial endospores.

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Question 5 1 / 1 pts 5. What is the product of elimination reaction shown in the box? A) C) B) D)
failedAnswered
Eleven percent of U.S. employees who are late for work blame oversleeping. You randomly select four U.S. employees who are late for work and ask them whether they blame oversleeping. The random variable represents the number of U.S. employees who are late for work and blame oversleeping. Find the mean of the binomial distribution. μ= (Round to the nearest hundredth as needed.)
failedAnswered
Question 8 Damage to the optic chiasm results in the complete loss to which part of your vision?
failedAnswered
Determine whether the following procedure results in a binomial distribution or a distribution that can be treated as binomial (by applying the 5% guideline for cumbersome calculations). If it is not binomial and cannot be treated as binomial, identify at least one requirement that is not satisfied. In a Pew Research Center survey of 100 subjects, the ages of the respondents are recorded. Choose the correct answer below. A. It is binomial or can be treated as binomial. B. It is not binomial because the probability of success does not remain the same in all trials. C. It is not binomial because there are more than two possible outcomes. D. It is not binomial because there are more than two possible outcomes and the trials are not independent.
failedAnswered
B6-CRT02: ANGULAR VELOCITY-TIME GRAPH-ANGULAR ACCELERATION-TIME GRAPH Sketch an angular acceleration versus time graph given the angular velocity versus time graph shown for the same time interval. Explain your reasoning.