Question

12) Thickness of bimolecular lipid layer is generally..
(A) 20 Å
(B) 30 Å
(C) 40 Å
(D) 60 Å​

Answer 1

Answer:

(B) 30 A

Explanation:

Answer 2

Answer: c) $40\AA$ is the thickness of the bimolecular lipid layer as stated by Robertson.

Explanation:

Robertson gave the unit membrane model of the plasma membrane.

The unit membrane model proposed by Robertson:

• Bio-membrane is made up of three layers, from the three layers, two are protein layers and one is a phospholipid layer.
• The thickness of the phospholipid bilayer is 35-40 Angstrom and the thickness of each protein layer is 20-30 Angstrom.
• The total thickness of the bio-membrane is approximately 75-100 Angstrom.

Here, the thickness of the bimolecular lipid layer is asked which is equal to C) 40 Angstrom.