Multiple choice

A cell, which is very active in the synthesis and secretion of proteins, would be expected to have

  1. equal amount of smooth and rough ER

  2. more smooth than rough ER

  3. more rough than smooth ER

  4. more Golgi complex
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Proteins are synthesised by ribosomes associated with the cytoplasmic side of the membrane of rough endoplasmic reticulum (RER). Synthesised proteins enter into the membrane and lumen of RER by the process of co-translational translocation. Modification of proteins is also occurred in the lumen. Proteins destined to be secreted then follow the secretory pathway. On the other hand, SER is responsible for lipid biosynthesis, detoxification, etc.

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