Cell Transport

Front

What is the movement of molecules from an area of high concentration to an area of low concentration called?

Back

Diffusion

Front

When a molecule diffuses down a concentration gradient, it goes from an area of ______ concentration into an area of ______ concentration.

Back

high, low

Front

During passive transport, molecules move from an area of ______ concentration to an area of _____ concentration.

Back

higher, lower

Front

What is the term for the process where water molecules move across a semi-permeable membrane?

Back

Osmosis

Front

What does it mean for a cell membrane to be semi-permeable?

Back

It allows some substances to pass through it, but not others.

Front

What is active transport?

Back

The movement of molecules against a concentration gradient, requiring energy.

Front

What is the difference between passive transport and active transport?

Back

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

Front

What is an isotonic solution?

Back

A solution where the concentration of solutes is equal inside and outside the cell.

Front

What happens to a cell in a hypertonic solution?

Back

The cell shrinks as water moves out of it.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells as water moves into it.