Smooth endoplasmic reticulum makes:
Correct answer: D. Lipids
- A. Enzymes
- B. Protein
- C. Sugar
- D. Lipids
Explanation
The smooth endoplasmic reticulum (SER) is primarily responsible for the synthesis of lipids, which include phospholipids, cholesterol, and steroids. These lipids are crucial for the construction of cell membranes and hormone production. The SER does not synthesize proteins or enzymes, as these require ribosomes found on the rough endoplasmic reticulum (RER). Additionally, sugar synthesis, such as gluconeogenesis, occurs elsewhere in the cell, not in the SER.
This question appeared on the ETEA MDCAT 2012 paper, which you can sit online with every answer explained.
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About Cytoplasmic Organelles
Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.
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