The R Group or Side Chain of the Amino Acid

question 43

Multiple Choice

The R group or side chain of the amino acid serine is -CH₂-OH. The R group or side chain of the amino acid alanine is -CH₃. Where would you expect to find these amino acids in a globular protein in aqueous solution?

• A)Serine would be in the interior, and alanine would be on the exterior of the globular protein.
• B)Alanine would be in the interior, and serine would be on the exterior of the globular protein.
• C)Both serine and alanine would be in the interior of the globular protein.
• D)Both serine and alanine would be on the exterior of the globular protein.
• E)Both serine and alanine would be in the interior and on the exterior of the globular protein.

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Definitions:

Concrete Words

Words that refer to tangible, specific things, actions, or phenomena, making communication more vivid and understandable.

Loss

The state of being deprived of or of being without something that one has had.

Setback

An unexpected challenge or obstacle that delays progress or reverses some of the advances already made.

Farther

Used to describe a greater physical distance when comparing two or more points.