AP BIOLOGY

ANIMAL PHYSIOLOGY

CHEMICAL SIGNALS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

What organelle stores calcium?

A	smooth ER
B	rough ER
C	nucleus
D	mitochondrion

Explanation:

Detailed explanation-1: -The SER is a storage site for calcium within cells.

Detailed explanation-2: -Calcium storage is one of the functions commonly attributed to the endoplasmic reticulum (ER) in nonmuscle cells. Several recent studies have added support to this concept.

Detailed explanation-3: -The endoplasmic reticulum (ER) is usually the largest store of releasable calcium in the cell.

Detailed explanation-4: -Calcium ions are stored in the endoplasmic reticulum of nerve and muscle cells. The endoplasmic reticulum of muscle cells storing calcium are called sarcoplasmic reticulum. Thus, the correct answer is option C.

There is 1 question to complete.