Question 1

What is diffusion?

Accepted Answer

The movement of particles from high concentration to low concentration

Answer

Active movement of particles, requiring energy from respiration

Answer

The movement of particles from low concentration to high concentration

Question 2

Which of these three liquids has the highest water potential?

Accepted Answer

Pure water

Answer

10% sucrose solution

Answer

20% sucrose solution

Question 3

What is osmosis?

Accepted Answer

The overall movement of water, through a partially permeable membrane, from a region of low solute concentration to a region of high solute concentration

Answer

The overall movement of water, through a partially permeable membrane, from a region of low water concentration to a region of high water concentration

Answer

The overall movement of water, through a partially permeable membrane, from a region of high solute concentration to a region of low solute concentration

Question 4

What happens to red blood cells when they are put into water?

Accepted Answer

They gain water and swell

Answer

They lose water and shrink, becoming wrinkled

Answer

Their size and shape does not change

Question 5

Why do plant cells become flaccid in concentrated sugar solution?

Accepted Answer

They lose water by osmosis

Answer

They gain water by osmosis

Question 6

Accepted Answer

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