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PYQs/Biology/Mechanism of Muscle Contraction

Biology2014

Mechanism of Muscle Contraction

Stimulation of a muscle fibre by a motor neuron occurs at

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Mechanism of Muscle Contraction

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During the muscular contraction which of the following events occur? - $\\$ (a) ‘H’ zone disappears $\\$ (b) ‘A’ band widens $\\$ (c) ‘I’ band reduces in width $\\$ (d) Myosine hydrolyzes ATP, releasing the ADP and Pi. $\\$ (e) Z-lines attached to actins are pulled inwards. $\\$ Choose the correct answer from the options given below.

Calcium is important in skeletal muscle contraction because it

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

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