Assertion: A cell membrane shows fluid behaviour.
Reason: A membrane is a mosaic of lipids and proteins.

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is B Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
Plasma membrane is a lipid bilayer in which the proteins, lipids and carbohydrates are incorporated which give it a mosaic like appearance. Lipid bilayer gives it a fluid character.
So, the correct answer is option A.

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Similar questions

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(c) Assertion is correct, but reason is incorrect
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Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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Assertion: A cell membrane shows fluid behaviour.Reason: A membrane is a mosaic of lipids and proteins.

Assertion: A cell membrane shows fluid behaviour.
Reason: A membrane is a mosaic of lipids and proteins.