NEET Zoology Proteins MCQ Question
Which combination of statements about protein structure is correct?
The N-terminal amino acid is the first in the sequence; tertiary structure is necessary for biological function.
Only left-handed helices are found in proteins; the tertiary structure is a linear arrangement.
The C-terminal amino acid is the last in the sequence; all proteins have a rigid linear structure.
Tertiary structure is not important for protein function; proteins are only arranged in helical form.
Correct Answer
Detailed Explanation
The N-terminal amino acid is indeed the first one in a protein sequence, and tertiary structure is essential for the biological activity of proteins, as it provides a 3D shape necessary for function.
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