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Which of the following contains both a carboxyl group and an amino group?


A) carbohydrates
B) nucleotides
C) amino acids
D) lipids

E) A) and D)
F) A) and C)

Correct Answer

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The chitin that makes up the exoskeleton of insects is a polymer of amino acids.

A) True
B) False

Correct Answer

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Many features of a protein change when it is moved into an environment with a different pH. Which of the following features would stay the same?


A) function of the protein
B) shape of the protein
C) binding properties of the protein
D) amino acid sequence of the protein
E) tertiary structure of the protein

F) A) and E)
G) All of the above

Correct Answer

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