Actin and myosin are fundamental proteins responsible for muscle contraction. To which category of proteins do they belong?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
11 May 2018
Last updated
28 May 2026

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Explanation

Actin and myosin are classified as fibrous proteins due to their elongated, filamentous structures that enable muscle contraction. Unlike globular proteins, which are more compact and soluble, fibrous proteins provide structural support and mechanical strength.

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