Cell Transport

Front

What is osmosis?

Back

Osmosis is the movement of water across a membrane.

Front

What is a concentration gradient?

Back

The difference in the concentration of a substance across a space.

Front

What do facilitated-diffusion carrier proteins do?

Back

They are specific for the kinds of substances they transport.

Front

What happens to a slug when salt is put on it?

Back

The slug shrinks.

Front

What type of cellular transport is exocytosis?

Back

Exocytosis is a type of cellular transport that involves the expulsion of materials from the cell.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.

Front

What is the role of cell-membrane pumps?

Back

Cell-membrane pumps transport substances across the membrane and require energy.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them.