Cell Transport

Front

How do molecules get into the cell against the concentration gradient?

Back

active transport using ATP

Front

A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. What has occurred?

Back

The water in the gums has moved out due to the high concentration of salt in the solution.

Front

The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering, this membrane is called

Back

semi-permeable

Front

Describe the movement of particles using a carrier protein from high to low concentration across a cell membrane.

Back

facilitated diffusion

Front

H+ ions are being pumped from a low concentration to a high concentration across a cell membrane. How do you describe this type of transport?

Back

active transport

Front

In pure water, a red blood cell from an animal will swell and burst, but a leaf cell from a plant will not. Which structure in the leaf cell is responsible for this difference? Options: cell membrane, cell wall, mitochondrion, nucleus

Back

cell wall

Front

Which molecule would require the use of energy in order to be brought into the cell? Options: 1, 2, 3, 4

Back

4

Front

Which activity can occur without the use of energy?

Back

movement of water across a membrane

Front

The diffusion of water across a selectively permeable membrane is called

Back

osmosis

Front

During diffusion, molecules tend to move...

Back

down the concentration gradient