Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

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Which structure is primarily involved in the synthesis of lipids?

  1. Smooth endoplasmic reticulum

  2. Rough endoplasmic reticulum

  3. Nucleus

  4. Mitochondria

The correct answer is: Smooth endoplasmic reticulum

The smooth endoplasmic reticulum (SER) is primarily responsible for the synthesis of lipids, which include phospholipids and cholesterol that are essential for forming cell membranes. This structure does not have ribosomes on its surface, which distinguishes it from the rough endoplasmic reticulum, where protein synthesis occurs due to the presence of ribosomes. The smooth endoplasmic reticulum also plays a crucial role in carbohydrate metabolism and detoxification processes, making it a vital cellular organelle for various metabolic pathways. Its specific structure and functions enable it to effectively contribute to lipid synthesis and processing within the cell.

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