Test - Cell Transport

Front

What is diffusion?

Back

Diffusion is the process by which particles move from an area of high concentration to an area 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

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, often through diffusion or osmosis.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

Why is diffusion important for cells?

Back

Diffusion allows cells to take in necessary materials and substances without using energy.

Front

What happens to a raisin in water?

Back

A raisin will swell in water due to osmosis, as water moves into the raisin from an area of higher concentration to lower concentration.

Front

What happens to a gummy bear in salt water?

Back

A gummy bear placed in salt water will lose mass because water moves out of the gummy bear through osmosis.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion refers to the movement of all types of particles, while osmosis specifically refers to the movement of water.

Front

What is concentration gradient?

Back

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

Front

What is an example of active transport?

Back

An example of active transport is the sodium-potassium pump, which moves sodium ions out of and potassium ions into a cell.