Unit 3: Cell Transport

Front

What is the term for a solution with the same solute concentration inside and outside of a cell?

Back

Isotonic

Front

What is the direction of movement for molecules during active transport?

Back

Against the concentration gradient.

Front

What type of transport is illustrated by the sodium-potassium ion pump?

Back

Active transport - sodium, potassium ion pump.

Front

What is facilitated diffusion?

Back

A process where molecules diffuse through a protein from an area of high concentration to low concentration.

Front

What type of solution causes a cell to swell?

Back

Hypotonic solution.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy, while active transport requires energy.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of it.

Front

What is the role of transport proteins in facilitated diffusion?

Back

They help move molecules across the cell membrane without using energy.

Front

What is a concentration gradient?

Back

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