Zoology-Muscle Contraction
NEET Zoology Muscle Contraction MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about muscle contraction is correct?
A
Myosin filaments bind to actin filaments after calcium ions bind to troponin.
B
The sarcolemma does not play a role in initiating muscle contraction.
C
Actin filaments are thicker than myosin filaments.
D
Tropomyosin is a type of myosin protein involved in muscle contraction.
Correct Answer
Option A
Detailed Explanation
Myosin filaments bind to actin filaments after calcium ions bind to troponin, which uncovers the active sites for myosin. This process is essential for muscle contraction as outlined in the NCERT context.
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