Cell Transport

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

Front

Does active transport require energy?

Back

Yes, active transport requires energy to move substances against their concentration gradient.

Front

What part of a phospholipid is hydrophilic?

Back

The phosphate group is the hydrophilic part of a phospholipid.

Front

What are hydrophilic molecules?

Back

Molecules that mix well with water are called hydrophilic.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses proteins in the cell membrane to help molecules enter or leave the cell.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane.

Front

What is phagocytosis?

Back

Phagocytosis is a type of endocytosis that involves the engulfing of large, solid particles by a cell.

Front

What is pinocytosis?

Back

Pinocytosis is a type of endocytosis where the cell engulfs liquid and small particles.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane.

Front

What is the role of membrane proteins in transport?

Back

Membrane proteins facilitate the transport of substances across the cell membrane, either by acting as channels or carriers.