QuestionDecember 16, 2025

Which cell organelle stores up calcium ions for the muscle fiber? Mitochondria Sarcoplasmic Reticulum Sarcolemma

Which cell organelle stores up calcium ions for the muscle fiber? Mitochondria Sarcoplasmic Reticulum Sarcolemma
Which cell organelle stores up calcium ions for the muscle fiber?
Mitochondria
Sarcoplasmic Reticulum
Sarcolemma

Solution
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Answer

Sarcoplasmic Reticulum Explanation 1. Identify organelle responsible for calcium storage The sarcoplasmic reticulum is specialized for storing and releasing calcium ions in muscle fibers. 2. Eliminate incorrect options Mitochondria produce energy; sarcolemma is the cell membrane, neither stores calcium.

Explanation

1. Identify organelle responsible for calcium storage<br /> The sarcoplasmic reticulum is specialized for storing and releasing calcium ions in muscle fibers.<br />2. Eliminate incorrect options<br /> Mitochondria produce energy; sarcolemma is the cell membrane, neither stores calcium.
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