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Assertion : Ca^(2+) plays important role...

Assertion : `Ca^(2+)` plays important role in the muscle contraction.
Reason : `Ca^(2+)` Combines with troponin chain, displacing tropomyosin allowing the myosin head part to combine with actin to from actomyosin complex .

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

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Assertion: on stimulation, a muscle cell releases calcium ions (Ca^(2+)) from sarcoplasmic reticulum. Reason: By reacting with a protien complex, Ca^(2+) uncover active sites on the actin filaments.

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Assertion (A): The Heat of ionisation of water is equal to the heat of neutralistion of a strong acid with a strong base. Reason (R ) : Water ionises to a very small extent while H^(o+) ions from from an acid combine very rapidly with overset(Theta)OH from a base to form H_(2)O .

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