Which organelle is responsible for synthesis of steroids,phospholipids and functions as a reservoir for Ca²⁺in muscle cells? A)mitochondrion B)secretory vesicle C)smooth endoplasmic reticulum D)rough endoplasmic reticulum E)lysosome

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The smooth endoplasmic reticulum is responsible for lipid synthesis including steroids and phospholipids. It also functions as a reservoir for calcium ions in muscle cells. The other organelles listed do not have these functions.

Which Organelle Is Responsible for Synthesis of Steroids,phospholipids and Functions