Question

The chief functions of ER are

I. Protein synthesis
II. Lipid synthesis
III. Glycogen synthesis
IV. Cholesterol synthesis
V. ATP synthesis
VI. Detoxification

Choose the correct answer.

• A. I, II, III, IV, VI
• B. I, II, IV, V
• C. II, III, IV, V
• D. III, IV, V, VI

Answer 1

The correct option is A I, II, III, IV, VI

• The Endoplasmic reticulum (ER) is a eukaryotic organelle that forms an interconnected network of tubules, vesicles, and cisternae within cells. Rough endoplasmic reticulum synthesizes proteins,
• while smooth endoplasmic reticulum synthesizes lipids and steroids, metabolizes carbohydrates and steroids and regulates calcium concentration, drug detoxification and attachment of receptors on cell membrane proteins. Sarcoplasmic reticulum solely regulate calcium levels.