Question

According to unit membrane structure of cell membrane, its thickness is about ____ x 10${}^{-10}$ m.

• A. 35
• B. 20
• C. 75
• D. 100

Answer 1

The correct option is C

75

According to Robertson's concept of the unit membrane structure of cell membrane, it is trilaminar and has a thickness of about 75 x 10${}^{-10}$ m with the central lipid bilayer 35 units, + 20 + 20 units as 2 peripheral protein layers each.