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Questions and Answers
Proteins are composed of the elements carbon, oxygen, and nitrogen only.
False
All proteins contain 200 to 300 amino acids.
False
The quaternary structure of a protein is the result of the interaction of more than one protein molecule.
True
The primary structure of a protein represents the three-dimensional shape of the molecule.
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The function of a protein is related to its secondary structure.
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Protein synthesis occurs at a rate of approximately five to ten peptide bonds per second.
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Thyroxine is an example of a hormone that assists in controlling protein synthesis.
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Catabolism requires energy to break down complex molecules into smaller units.
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Intracellular proteins are generally synthesized on ribosomes attached to the rough endoplasmic reticulum.
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Pregnant women are often in negative nitrogen balance.
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