You are trying to examine the external structures of a bacteria that you isolated from Mars' surface. Which of the following instruments will give you the best information?
a. scanning electron microscope
b. transmission electron microscope
c. fluorescence microscope
d. phase-contrast microscope
e. dark-field microscope
Ans: a. scanning electron microscope
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Treatment of plants with fungicides may result in a phosphorus deficiency. What is the most likely explanation for this observation?
A. Phosphorus transporters in the plasma membrane of the plant cells are destroyed. B. Plant cell walls impede the uptake of phosphorus after fungicide has been sprayed to limit the amount of fungicide that enters the plant. C. ATP synthesis is blocked, so phosphorus cannot be absorbed into plant cells. D. Nitrogen fixation is inhibited. E. Mycorrhizal symbionts are destroyed by the fungicide.
The corona virus can be treated with antibiotics
a. true b. false
If your hypothesis is rejected, then:
A) your experiment was a success. B) your experiment was poorly designed. C) your data is only half as reliable. D) you should change the level of statistical significance until your hypothesis is accepted. E) you may still have learned something important about the system you were testing.
A ____ ____ is a bacterial cell that can still go through mitosis. This process is known as ______ _____.
Fill in the blank(s) with the appropriate word(s).