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Question
The primary structure of a protein molecule has ______.
Options
Two ends
One end
Three ends
No ends
Solution
The primary structure of a protein molecule has two ends.
Explanation:
A protein is imagined as a line, the left end represented by the first amino acid and the right end represented by the last amino acid. The first amino acid is also called an N-terminal amino acid. The last amino acid is called the C-terminal amino acid.
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