Unit Test — Unit test Answers

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Which statement is true?

Lipids are a type of fat.

Fats are a type of lipid.

Fats and lipids are unrelated.

All lipids are fats, and all fats are lipids.

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Which statement best distinguishes plants and animals as they relate to amino acids?

Plants can synthesize all twenty amino acids. Humans must eat plants or animals to obtain some of these amino acids.

Plants can synthesize all twenty amino acids. Humans must eat plants to obtain all of these amino acids.

Plants can only synthesize ten amino acids. Humans synthesize the other ten amino acids.

Plants and humans both synthesize all twenty amino acids. Humans must supplement a few of these by eating animals.

Which three components are common to all amino acids?

an amino group, a carboxyl group, and an R group

an amino group, a phosphate group, and an R group

a five-carbon sugar, a phosphate group, and a nitrogenous base

a five-carbon sugar, an amino group, and a nitrogenous base

When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity?

cell

organism

organ system

tissue

Which is biotic?

water

temperature

sapling

rocks

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