Unit 3 Test Review Part 1

This type of transport moves molecules DOWN the concentration gradient.

• Passive Transport

• Active Transport

Using ATP (energy) to move ions/molecules from low to high is an example of which type of transport?

• active transport

• osmosis

• facilitated diffusion

• passive transport

Which side of the membrane has a higher concentration of WATER?

• the right side

• the left side

Which direction will WATER move in this image?

• from right to left

• up and down

• left to right

• it won't move at all

Which way will water (the star) move through the membrane?

• it will move out of the cell

• it will move into the cell

• it won't move at all

• there is no water in this image

Which way will glucose (the diamond) move through the membrane?

• it won't move

• it is in equilibrium

• it will move into the cell

• it will move out of the cell

You notice one of your plants is severely wilted. You give it water and notice that it looks healthy again. What happened to cause the plant to look healthy again?

• water moved via active transport out of the plant cells

• water moved via osmosis into the plant cells

• water moved out of the plant cells via diffusion

• water moved into the cells via active transport

Passive transport does not use _________ to move molecules through the membrane.

• ATP

• sugars

• chloroplasts

• water

What happens to the cell size/shape if water moves OUT of the cell?

• the cell stays the same

• the cell will swell up

• the cell will explode

• the cell will shrink

If we were to place seaweed into freshwater, what would happen to the cells?

• they would shrink

• they would swell

• they would stay the same