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Assertion : The endoplasmic reticullum w...

Assertion : The endoplasmic reticullum 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 amnd 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.

Text Solution

Verified by Experts

The correct Answer is:
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 thestis and ovary and formation of visual pigments from vitamin A in retinal cells.
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Knowledge Check

  • Assertion (A) : When two non-reactive gases are allowed to mix, the gas molecules migrate from region of higher concetration to a region of lower concentration. Reason (R) : The property of gas which involves the movement of the gas molecules through another gases is called Effusion.

    A
    Bothe (A) and (R) are true and (R) is the correct explanation of (A).
    B
    Both (A) and (R) are true and (R) is not the correct explanation of (A).
    C
    (A) true but (R) false.
    D
    Both (A) and (R) are false.
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