Cell Transport

Front

What does it mean if a membrane is selectively permeable?

Back

It allows some substances to pass through while blocking others.

Front

What is osmosis?

Back

The movement of water across a selectively permeable membrane from an area of high concentration to an area of low concentration.

Front

What is diffusion?

Back

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

Front

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

Back

It means that the membrane allows materials like oxygen and nutrients to pass through.

Front

What is active transport?

Back

The movement of substances across a cell membrane using energy, usually against a concentration gradient.

Front

What is a concentration gradient?

Back

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

Front

What happens during passive transport?

Back

Substances move across the cell membrane without the use of energy, typically from high to low concentration.

Front

What is an isotonic solution?

Back

A solution where the concentration of solutes is the same inside and outside the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A solution with a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.