JAMB - Biology (2017 - No. 8)
Which of the following choices correctly describes the composition of the cell membrane?
contains only lipids
contains lipids and protein
contains lipids and cytosol
contains only proteins
Paskaidrojums
It consists of a lipid bi-layer with embedded proteins. The basic function of the cell membrane is to protect the cell from its surroundings.
The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules
The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules