Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the

laboratory with increasing amounts of the chemical for one week and then measure their viability. What is the
experimental variable for this experiment?



a. chemical X
b. fish
c. river
d. farming
e. water


a

Biology & Microbiology

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Feces become concentrated through the

process of

a. simple diffusion. b. hydrolysis. c. osmosis. d. active transport. e. facilitated diffusion

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A mutation in the Apetala1 gene, in Brassica

oleracea plants (wild cabbage), results in mutated flowers that a. have multiple female parts. b. have multiple male parts. c. have leaves instead of petals. d. have enormous size. e. burrow into the ground like peanuts

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What might be a reason for the accumulation of improperly folded protein complexes in the bacterial cell cytoplasm following translation?

A. A problem exists with the functioning of molecular chaperones B. Polysomes are forming on the mRNA C. The cell is synthesizing proteins too rapidly D. The proteins are being transcribed but not translated

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Kinetic energy is like sitting at the top of a hill, and potential energy is like coasting down that hill on your bike

Indicate whether the statement is true or false

Biology & Microbiology