Cell Transport

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances across a cell membrane without using energy.

Front

What happens to a cell in a hypotonic solution?

Back

A cell in a hypotonic solution will swell and perhaps burst (lyse) due to the influx of water.

Front

What occurs to an animal cell in an isotonic solution?

Back

An animal cell in an isotonic solution will stay the same size because the concentration of solutes is equal inside and outside the cell.

Front

What is pinocytosis?

Back

Pinocytosis is a form of endocytosis where the cell takes in liquids and small particles.

Front

What is diffusion?

Back

Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

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

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required for active transport to move substances against their concentration gradient.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy and moves substances against their concentration gradient.