A) diffusion
B) pinocytosis
C) Brownian movement
D) active transport
Correct Answer: D
Solution :
Active transport is the energy-dependent transport of a substance across a cell membrane, accumulating it on the other side against the chemical or electrochemical gradient. It involves proton 'pumps' traversing the membrane and requires an appropriate energy-supply. Diffusion is the movement of molecules from their higher concentration to their lower concentration. Pinocytosis is also known as cell drinking in which cell takes liquid material. It is a type of endocytosis. Suspended particles in a colloidal system hit one another and are seen moving up and down, forward and backward. This movement is called Brownian movement or colloidal movement.
You need to login to perform this action.
You will be redirected in
3 sec
