Cell Membranes and Transport

Front

What is the definition of high concentration?

Back

An area that contains a large amount of particles.

Front

What is passive transport?

Back

The movement of molecules across a cell membrane without the use of energy.

Front

What is active transport?

Back

The movement of molecules across a cell membrane using energy, typically against a concentration gradient.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is diffusion?

Back

The process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What type of cells have cell walls?

Back

Plant cells.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to another solution.

Front

What happens to a cell in a hypotonic solution?

Back

The cell swells as water enters due to osmosis.

Front

What is a semi-permeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What is the role of the cell membrane?

Back

To protect the cell and regulate what enters and exits.