Question

the process in which a physical pressure forces fluid through a selectively permeable membrane is called ______.

○ filtration
○ exocytosis
○ diffusion
○ active transport

Explanation:

• Filtration is defined as the movement of fluid through a selectively permeable membrane driven by physical pressure.
• Exocytosis is the release of substances from a cell via vesicle fusion with the membrane, not pressure-driven fluid movement.
• Diffusion is the passive movement of substances down a concentration gradient, no physical pressure required.
• Active transport uses energy to move substances against a gradient, not pressure-driven fluid flow.

Answer:

filtration