Why is plating efficiency an important metric of consideration in quantitative measurements of virus?
a. Not all host cells are susceptible to viral infection.
b. Prophage need to be accounted for.
c. Virions do not infect host cells with 100 percent efficiency.
d. All of the above are correct.
Answer: C
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An ecologist who studies the cycling of nutrients and the flow of energy between the biotic and abiotic components of
an ecological community is a(n) ____ ecologist.
a. behavioral b. behavioral c. community d. ecosystem e. organismal
Which represents the highest degree of certainty?
a. hypothesis b. variable c. assumption d. theory e. prediction
Which of the following is true of both starch and cellulose?
A) They can both be digested by humans. B) They are both structural components of the plant cell wall. C) They are geometric isomers of each other. D) They are both polymers of glucose. E) They are both used for energy storage in plants.
Which mechanism is NOT used by ncRNAs to bind to other molecules?
A. Complementary base-pairing between the ncRNA and RNA B. Complementary base-pairing between the ncRNA and DNA. C. A stem loop structure in the ncRNA binds to a specific protein structure. D. A stem loop structure in the ncRNA binds to a specific DNA sequence. E. Several stem loop structures form a shape that binds to a small molecule.