Which enzyme is used by RNA viruses to directly replicate the viral RNA genome? 

A. RNA-dependent DNA polymerase
B. DNA-dependent RNA polymerase
C. Reverse Transciptase
D. RNA-dependent RNA polymerase


Answer: D

Biology & Microbiology

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____________________ could one day be used to screen an individual's genome to reveal genetic predispositions to diseases

Fill in the blank(s) with correct word

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Which of the following is(are) true regarding

whale sensory systems? a. Like fishes, they use lateral line systems for navigation. b. Their jaws pick up sound vibrations in the water and transmit them to their middle ears. c. They collect sound waves using external ears. d. All whales have auditory canals leading to their middle ears. e. All of these are true

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Plant cells are capable of

a. photosynthesis. b. ATP production. c. glucose breakdown. d. aerobic respiration. e. all of these.

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The Clean Air Act of 1990 was important because it specifically

A. stated that all politicians would from then on be pro-environment. B. detailed ways of making our air crystal clean by the year 2000. C. required scrubbers on smokestacks of coal-fired plants. D. punished polluters.

Biology & Microbiology