NEET Zoology Muscle Contraction Assertion Reason Question
Assertion (A): In resting state, the active binding sites for myosin on actin filaments are masked.
Reason (R): Tropomyosin runs along the length of the actin filament and troponin is distributed at regular intervals on it.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
In the resting state, a subunit of troponin masks the active binding sites for myosin on actin filaments, and tropomyosin runs along the actin filament as described in the NCERT context.
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