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Question

The smooth endoplasmic reticulum is the major site for synthesis of ________
  1. proteins
  2. lipids
  3. carbohydrates
  4. vitamins

A
carbohydrates
B
vitamins
C
proteins
D
lipids
Solution
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The correct option is B lipids
The network of tiny tubular structures scattered in the cytoplasm is called the endoplasmic reticulum (ER). The endoplasmic reticulum not bearing is called the smooth endoplasmic reticulum (SER). The SER is the site of lipid synthesis. In animal cells, lipid-like steroidal hormones are synthesized in SER.
So, the correct answer is option B.

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