The iron-sulfur world hypothesis suggests that organic molecules formed near:a

volcanoes.
b. sulfur pools.
c. pools of water.
d. hydrothermal vents.
e. low atmosphere clouds.


d

Biology & Microbiology

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The nucleotide sequence in mRNA that carries the protein-building instructions is found in the ____

a. promoter b. nucleotide cap c. introns d. transcript e. exons

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What does the "mosaic" part of the fluid mosaic model refer to?

a. the membrane cholesterol b. the membrane functions c. the membrane proteins d. the membrane phospholipids

Biology & Microbiology

As a bicyclist pedals up a hill to the finish line of a race and "feels the burn" in his leg muscles, those muscle cells are most likely utilizing

A) only oxygen for maximum ATP production. B) some lactate fermentation and lactic starting to build up in his muscle tissue causing a cramp. C) only cellular respiration for maximum ATP production. D) both cellular respiration and oxygen for maximum ATP production.

Biology & Microbiology

Plants are raised under artificial lights turned off and on by an electric clock. Some are given long periods of light, others short periods. This is an example of

A. an experiment. B. a theory. C. deductive reasoning. D. inductive reasoning. E. a hypothesis.

Biology & Microbiology