Question

Ribosomes attach to the endoplasmic reticulum by their

• A. 50 'S' sub-unit
• B. 60 'S' sub-unit
• C. 40 'S' sub-unit
• D. More than one option is correct

Answer 1

The correct option is C 40 'S' sub-unit

Ribosomes are attached to outer surface of endoplasmic reticulum in eukaryotic cells. Ribosomes found in eukaryotic cells are 80S, of which 40S is smaller unit by which ribosome is attached to endoplasmic reticulum.

So the correct answer is "40 'S' sub-unit".