Question

The process of taking in liquid material by infolding of membrane is known as

• A. Phagocytosis
• B. Osmosis
• C. Active transport
• D. Pinocytosis

Answer 1

The correct option is D Pinocytosis

A. Phagocytosis is a process by which a cell engulfs a solid particle by forming an internal compartment known as a phagosome.

B. Osmosis is the process by which solvent molecules move across the selectively permeable membrane into a region of higher solute concentration.

C. Active transport is a process by which molecules move across the cell membrane from a region of low concentration to a region of high concentration against the concentration gradient using energy.

D. Pinocytosis (fluid endocytosis or bulk-phase pinocytosis) is a form of endocytosis in which extracellular fluid or liquid is engulfed and are brought into a cell by the budding of small vesicles on the surface.

So, the correct answer is 'Pinocytosis'.