Question

what is the net movement of particles from a region of higher concentration to a region of lower concentration called?
active transport
phagocytosis
diffusion
pinocytosis

Explanation:

• Active transport moves particles against a concentration gradient (low to high) using energy.
• Phagocytosis is the engulfment of large particles by cells.
• Pinocytosis is the uptake of liquid droplets by cells.
• Diffusion is defined as the net movement of particles from an area of higher concentration to an area of lower concentration, matching the question's description.

Answer:

C. Diffusion