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store house of calcium ion is. (a) sarcoplasmic reticulam (b) bone (c) nucleus (d) tonoplast

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  • Islamuddeen
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  • 23 Answers
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23 Answers

  • A

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  • a.sarcoplasmic reticulam

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  • a

    0

  • a

    0

  • its option A (sarcoplasmic reticulum) because presence of Ca+2 ions in sarcoplasmic reticulum helps for the contraction of muscles (we have studied that as action potential passes ca+2 ions from the sarcoplasmic reticum will be released into cytoplasm and thus the troponin which covers the active sites of actin move into cytoplasm and bind to ca+2 ions. This results in the exposure of active sites of actin and leads to contraction of muscle) . Though bone is said to be made of calcium phosphate it is not said to be the reservoir of ca+2 ions. as far as i know nucleus and tonoplast (layer around vacuole) are in no way associated with calcium.

    4

  • A

    2

  • sarcoplasmic reticulum (a)

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  • sarcoplasmic reticulum

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  • sarcoplasmic reticulum

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  • sarcoplasmic reticulum

    2

  • A

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  • nucleus

    1

  • sarcoplasmic reticulum

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  • Sarcoplasmic reticulum is also known as store house of Ca2+ Ions. Read ch21 of ncert class 11

    3

  • (a) Sarcoplasmic reticulum

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  • A

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  • a. Sarcoplasmic reticulam

    10

  • b

    -1

  • a

    5

  • bone

    -3
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