What gas makes up the majority of the atmosphere?

a. oxygen
b. water vapor
c. carbon dioxide
d. nitrogen
e. methane


ANSWER: d

Biology & Microbiology

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The macromolecule composed of amino acids is a

A. lipid. B. carbohydrate. C. nucleic acid. D. protein. E. steroid.

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Describe the musculature of the gastrointestinal tract

What will be an ideal response?

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In a haploid organism, most mitosis occurs

a. after fertilization and before meiosis. b. after meiosis and before fertilization. c. between meiosis I and II. d. during G1. e. in diploid cells.

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Bacteria in phylum Fusobacteria are anaerobes that predominantly ferment sugars as their source of fuel, often producing butyric acid as an end product that smells rancid in culture.

Answer the following statement true (T) or false (F)

Biology & Microbiology