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Question

Which one of these is helpful for muscle contraction?


A

Sarcoplasmic ER

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B

Smooth ER

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C

Rough ER

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D

Nucleus

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Solution

The correct option is A

Sarcoplasmic ER


The sarcoplasmic reticulum is a specialized SER that regulates the calcium ion concentration in the cytoplasm of striated muscle cells.


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