The part of the amino acid that makes it unique is
A) the side chain.
B) the nitrogen.
C) the carbon chain.
D) all of the above.
Q. 2The nine essential amino acids
A) can be made by the body.
B) are present in a wide variety of fruits.
C) must come from the diet.
D) are not necessary for protein synthesis.
Q. 3Your body uses a total of ________ amino acids with ________ different side chains to make proteins.
A) 10; 15
B) 20; 20
C) 25; 11
D) 9; 20
Q. 4The structure and function of a protein depends upon
A) the unique sequence of amino acids.
B) the presence of nitrogen in the amino acid.
C) what you ate that day.
D) the presence of nonessential amino acids in the diet.
Q. 5The function of the protein is determined by
A) the number of amino acids in the chain.
B) its hydrophilic nature.
C) its shape in the body.
D) the essential amino acid content.
Q. 6Which of the following causes the protein to have its unique shape?
A) the peptide bonds
B) the interactions of the side chains
C) the amino acid sequence
D) the presence of nitrogen
Q. 7Proteins differ from fats and carbohydrates in that they contain
A) carbon.
B) hydrogen.
C) oxygen.
D) nitrogen.
Q. 8All of the following are functions of protein EXCEPT
A) being a major component of muscles.
B) fighting infection.
C) allowing glucose to enter the cells.
D) contributing to growth of hair and fingernails.
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