store house of calcium ion is. (a) sarcoplasmic reticulam (b) bone (c) nucleus (d) tonoplast
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Rohan
- 11 Sep
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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.
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Lalithasriprada
- 15 May
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Sarcoplasmic reticulum is also known as store house of Ca2+ Ions. Read ch21 of ncert class 11
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Harshit
- 25 Sep
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A