Cell Transport Mechanisms

This set of flashcards covers key concepts related to cell transport mechanisms, detailing the difference between passive and active transport, types of movements, and roles of specific proteins and processes.

Passive Transport

Movement of molecules across cell membranes without the need for energy input.

Active Transport

Movement of molecules against a concentration gradient, requiring energy input.

Diffusion

The process of molecules moving from an area of high concentration to an area of low concentration.

Osmosis

The diffusion of water molecules through a selectively permeable membrane.

Facilitated Diffusion

Process of passive transport of molecules across a membrane via proteins.

Channel Proteins

Proteins that create passageways for specific molecules to cross membranes.

Carrier Proteins

Proteins that change shape to transport molecules across membranes.

Endocytosis

Process by which cells take in large amounts of materials by engulfing them.

Phagocytosis

Type of endocytosis where the cell engulfs large solid particles.

Pinocytosis

Type of endocytosis where the cell takes in liquid droplets.

Bulk Transport

Active transport of large molecules or particles across the cell membrane.

Primary Active Transport

Direct use of ATP to transport molecules against their gradient.

Secondary Active Transport

Transport of molecules using energy from the movement of another molecule.

Aquaporin

Channel protein that specifically facilitates water transport across membranes.