Which viruses have single-stranded RNA that acts as a template for DNA synthesis?

A) lytic phages
B) proviruses
C) viroids
D) bacteriophages
E) retroviruses


Answer: E

Biology & Microbiology

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Bony fish usually do not need to adjust pupil size because:

a. their eyelids protect their eyes from bright light. b. the quantity of light is relatively low. c. they can move their lens forward and backward. d. a in conjunction with c

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Root hairs absorb nutrients from soil against the nutrient concentration gradient. To achieve this, root hairs use _____.

A. proton pumps B. facilitated diffusion C. direct diffusion D. osmosis

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Growth of bacteria in broth produces

What will be an ideal response?

Biology & Microbiology

This cellular structure lacks a membrane:

endoplasmic reticulum chloroplast nucleus nucleoid Golgi body

Biology & Microbiology