Cell Transport

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until they are evenly distributed.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

Why is diffusion important to cells?

Back

Diffusion allows cells to take in materials without using energy.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.

Front

What is a permeable membrane?

Back

A permeable membrane is one that allows certain materials to pass through while blocking others.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

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 an example of diffusion?

Back

An example of diffusion is the spreading of perfume scent in a room.

Front

What is the role of the cell membrane?

Back

The cell membrane controls what enters and exits the cell, maintaining the cell's internal environment.