Cell Transport

During diffusion, substances move from an area of __________ conc. to ____________ conc.

• low, high

• equal, low

• high, low

• high, equal

A channel protein does which of the following?

• carries ions or molecules across the membrane

• forms tiny holes in the membrane

• changes shape as it transports molecules

• all of the above

The sodium potassium pump does what?

• uses energy to move Na ions out of the cell and K ions into the cell

• uses energy to move K ions out of the cell and Na ions into the cell

• moves Na ions out of the cell and K ions into the cell without energy

• moves K ions out of the cell and Na ions into the cell withou energy

Osmosis is...

• the diffusion of water and small ions

• the diffusion of water and small molecules

• the diffusion of water

• the diffusion of small molecules and ions

Which of the following is NOT passive transport? Check all that apply.

• gated protein pump

• osmosis

• facilitated diffusion

• vesicle transport

Endocytosis and exocytosis...

• are both a type of vesicle transport

• move large molecules

• are both a form of active transport

• all of the above

A specific type of diffusion with the help of transport proteins.

• facilitated diffusion

• endocytosis

• sodium-potassium pump

• exocytosis

An active transport protein

• channel protein

• receptor protein

• carrier protein

• peripheral protein

By moving substances in and out of the cell _______, the process of keeping conditions in the cell, is maintained.

_________ refers to the amount of solute in a solution