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

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

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

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

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are incorrect.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The cell membranes are composed primarily of two layers of phospholipid molecules with all the hydrophilic ends of phospholipids directed toward the inner and outer surfaces and the hydrophobic ends buried within the interior. These lipids exhibit lateral mobility and the integral membrane proteins can diffuse around in and at central lipid core. This gives membrane considerable degree of fluidity. Thus, the correct answer is option A.

Suggest Corrections

Similar questions

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

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.

Q. Given below is an assertion and reason.
A. Both assertion and reason are true with reason being the correct explanation
B. Both assertion and reason are true but reason is not correct explanation
C. Assertion is true, but reason is wrong
D. Both assertion and reason are wrong

Assertion: Gram negative bacteria do not retain the stain when washed with alcohol.
Reason: The cell wall of gram negative bacteria contains lipopolysaccharides, a part of which is integrated into membrane lipids.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Join BYJU'S Learning Program