Cellular Transport Vocab Flashcards

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Active and passive transport

Back

Mechanisms that move substances across cell membranes. Active transport requires energy, while passive transport does not.

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Facilitated diffusion

Back

A type of passive transport that uses protein channels to move substances across the cell membrane.

Front

ATP

Back

Adenosine triphosphate, the energy currency of the cell, used to power active transport and other cellular processes.

Front

Osmosis

Back

The diffusion of water across a selectively permeable membrane.

Front

Simple diffusion

Back

The movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.

Front

Endocytosis

Back

The process by which cells engulf substances into a pouch which then becomes a vesicle.

Front

Exocytosis

Back

The process by which cells expel materials in vesicles that fuse with the plasma membrane.

Front

Homeostasis

Back

The maintenance of a stable internal environment within an organism.

Front

Concentration gradient

Back

The difference in concentration of a substance across a space or a membrane.

Front

Diffusion

Back

The movement of particles from an area of higher concentration to an area of lower concentration.