Front

How do molecules get into the cell against the concentration gradient? Options: passive transport by diffusion, active transport using ATP , passive transport by osmosis,  osmosis

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? Options: The swollen gums have absorbed the saltwater solution., The saltwater solution lowers the temperature of the water in the gums., The salt in the solution has moved against the concentration gradient., The water in the gums has moved out due to the high concentration of salt in the solution. 

Back

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

Tags

NGSS.MS-LS1-3

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

Tags

NGSS.MS-LS1-2

Front

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

Back

facilitated diffusion

Tags

NGSS.MS-LS1-2

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

Tags

NGSS.MS-LS1-2

Front

During diffusion, molecules tend to move...

Back

down the concentration gradient

Front

Which example describes diffusion?

Back

All of the above

Front

Which describes a hypertonic environment?

Back

Too little water in the cell will cause the cell to shrink - the percentage of water is lower outside the cell than inside the cell

Tags

NGSS.MS-LS1-5

Front

The movement of particles from an area of high concentration to an area of low concentration

Back

diffusion

Tags

NGSS.MS-LS1-2

Front

The movement of materials that requires energy is called...

Back

active transport