Question

The average thickness of plasma membrane is(A) 100-150 Å(B) 75-100 Å(C) 60-75 Å(D) 75-100 m

Answer 1

Explanation:

The cell membrane is a phospholipid bilayer that are selectively permeable membranes which separate the interior of the cells (cell organelles and cytoplasm) from the outside environment or the extracellular space.

The cell membrane or plasmalemma is about 7.5–10 nm (75 angstroms) in thickness which consists of two layers of lipid molecules (bilayer) containing various types of protein molecules.

So, the correct answer is '7.5nm/75 A

Answer 2

The average thickness of plasma membrane is about 7.5-10 nm (75 angstroms).