Question

Assertion : The endoplasmic reticulum which lacks ribosomes is called smooth endoplasmic reticulum (SER)
Reason : SER is mainly involved in protein synthesis

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

Smooth Endoplasmic Reticulum (SER) possesses smooth membranes which do not bear ribosomes. SER is responsible for synthesis of fats inside the cells of adipose tissue, formation of sphaerosomes, synthesis of glycogen as well as glycogenolysis (hydrolysis of glycogen) in liver cells, synthesis of sterols and steroid hormones as in the interstitial cells of testis and ovary and formation of visual pigments from vitamin A in retinal cells.