Is Nakano's quote from Science consistent with the textbook's claim that RNA is a good candidate for the first life form?

A) yes
B) no


Answer: A

Biology & Microbiology

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An endocrine gland is

A. required for remodeling bone. B. the site at which hormones are produced and released into the blood. C. where neuronal signals are generated. D. restricted to the production of growth factors.

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Actual assembly of sugars during

photosynthesis a. occurs during light-independent reactions. b. takes place in the stroma. c. requires NADPH. d. requires ATP. e. does all of these.

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A ____ is a pelagic animal. 

A. fish B. slug C. housefly D. moose

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You are performing a Gram stain on gram-negative bacteria and you stop after the decolorizer step. What is the appearance of the bacteria at this point?

A) purple B) red C) colorless D) brown

Biology & Microbiology