Three multiple choice questions. Please answer with the THREE CORRECT letter cho

Question

Three multiple choice questions. Please answer with the THREE CORRECT letter choices. Explain answer only if you want to. It is appreciated.

A protein has an arginine in position 157 of its 430 amino acids. Replacing that amino acid with alanine, which has -CH3 as its side group, would be expected to

a) prevent the synthesis of the protein

b) significantly affect the overall three-dimensional structure of the protein.

c) have little effect on the function of the protein

d) eliminate the formation of a-helices in the secondary structure of the protein

e) eliminate the formation of hydrogen bonds in the tertiary structure of the protein

A string of 40 amino acids is typically referred to as a

a) protein, b) enzyme, c) oligopeptide, d) macromolecular complex, e) chromosome

What type of bond typically connects sugars to proteins as they travel through the Golgi Apparatus?

a) peptide bond, b) glycosidic bond, c) covalent bond, d) alchoholic bond, e) disulfide bond

Explanation / Answer

1) The correct answer is option E that is eliminate the formation of hydrogen bond in the tertiary structure because the CH3 can't make hydrogen bonds.

2) The correct answer is option C that is oligopeptide.

3) The correct answer is option B that is glycosidic bond that happens between sugar and protein.

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