Question 1

Diffusion is...

Accepted Answer

the movement of particles from an area of HIGH concentration to an area of LOW concentration

Answer

the movement of particles from an area of LOW concentration to an area of HIGH concentration

Question 2

The difference in concentration between two areas is called the...

Accepted Answer

concentration gradient

Answer

rate of diffusion

Answer

temperature

Answer

concentration difference

Question 3

What effect will an increase in temperature have on the rate of diffusion?

Accepted Answer

Increase the rate

Answer

Decrease the rate

Answer

No effect

Question 4

Which statement is TRUE about oxygen in the lungs?

Accepted Answer

Oxygen is in HIGHER concentration in the lungs compared to the blood

Answer

Oxygen concentration in the lungs and the blood is the same

Answer

Oxygen is in LOWER concentration in the lungs compared to the blood

Question 5

The diffusion of oxygen and carbon dioxide in the lungs is know as....

Accepted Answer

gas exchange

Answer

gas mobility

Answer

respiration

Answer

gas diffusion

Question 6

Cells that are adapted to make diffusion faster and easier often have..

Accepted Answer

folded membranes

Answer

many mitochondria

Answer

small surface area

Answer

no nucleus

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