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Assertion : Gap junctions perform cement...

Assertion : Gap junctions perform cementing function to keep the neighbouring cells together.
Reason : Tight junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small and big molecules, etc.

A

Both assertion and reason are true and reason is the correct explanation of assertion.

B

Both assertion and reason are true but reason is not the correct explanation of assertion.

C

Assertion is true but reason is false.

D

Both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Gap junctions perform a cementing function to keep the neighbouring cells together." - **Analysis**: Gap junctions are specialized intercellular connections that allow direct communication between adjacent cells. They enable the transfer of ions and small molecules but do not serve a cementing function. Therefore, this assertion is **false**. 2. **Understanding the Reason**: - The reason states that "Tight junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small and big molecules, etc." - **Analysis**: Tight junctions are primarily responsible for creating a barrier that prevents the passage of molecules and ions through the space between cells. They do not facilitate communication in the same way gap junctions do. Thus, this reason is also **false**. 3. **Conclusion**: - Since both the assertion and the reason are false, the correct answer is that both assertion and reason are false. ### Final Answer: Both assertion and reason are false. ---
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