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NEET Previous Year Question

$Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.$

Topic: NEET PYQ

Answer: D. Full step-by-step solution below.

A $Magnesium$
B $Sodium$
C $Potassium$
D $Calcium$

Correct answer: D

Solution

(d) Calcium ions (C a^{2 +}) bind to troponin, exposing the active sites on actin for myosin cross-bridge formation.

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