Biology Cell BUMHS 2022
PMDC Verified Question 88 of 143
What is true about smooth endoplasmic reticulum?
A
Involved in intracellular digestion
B
Involved in transmission of impulses
C
Involved in removal of storage and waste products
D
Involved in protein metabolism
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Involved in transmission of impulses
Concept: The SER has highly specialized functions in specific cell types, such as muscle cells.

Solution: In muscle cells, a specialized form of SER called the sarcoplasmic reticulum sequesters and releases Calcium ions (\(\text{Ca}^{+2}\)), which is an essential step in the transmission of impulses leading to muscle contraction.

Distractor Autopsy: Intracellular digestion is done by lysosomes. Protein metabolism is the RER's job.

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