Cell Transport Review

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from an area of lower concentration to an area of higher concentration, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane from an area of higher concentration to an area of lower concentration without the use of energy.

Front

Define osmosis.

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

Front

What happens to a cell in a freshwater solution?

Back

In a freshwater solution, the concentration of water is lower inside the cell, causing water to move into the cell.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of higher concentration to an area of lower concentration.

Front

What is an isotonic solution?

Back

An isotonic solution is a solution where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes outside the cell than inside, causing water to leave the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell than inside, causing water to enter the cell.

Front

What role does energy play in active transport?

Back

Energy is required in active transport to move molecules against their concentration gradient.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas.