Which statement about enzymes is incorrect?
A
Option A: They catalyze a chemical reaction without being utilized
B
Option B: Without their cofactor they are called apoenzymes.
C
Option C: Some of them consist solely of protein with no non-protein part.
D
Option D: All enzymes are fibrous Proteins
Correct answer D. All enzymes are fibrous Proteins
Explanation
Enzymes are globular proteins whose folded shape creates an active site; fibrous proteins such as keratin are structural, so saying all enzymes are fibrous is false.
Answer checked 11 October 2026 · How we write and check questions
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