Question

What is the average thickness of plasma membrane?

• A. 7 $\mathring{A}$
• B. 75-100 $\mathring{A}$
• C. 100-150 $\mathring{A}$
• D. 200 $\mathring{A}$

Answer 1

The correct option is B 75-100 $\mathring{A}$

Plasma membrane or cell membrane is the outer covering of all the cells and made up of phospholipid bilayer structure with embedded proteins. The thickness of the plasma membrane ranges from 7.0nm to 10nm or 75$\mathring{A}$ to 100$\mathring{A}$. Thus, the correct answer is option B.