Cell Transport (U2 S3)

Question 1

What molecule provides the energy to the sodium-potassium pump?

Accepted Answer

ATP

Question 2

Some active transport processes use carrier proteins, called "pumps."

Accepted Answer

True

Question 3

During osmosis, all water molecules in a mixed solution will move down their concentration gradient.

Accepted Answer

False

Question 4

_____________ is the movement of a substance out of the cell using vesicles.

Accepted Answer

exocytosis

Question 5

Movement of a substance against its concentration gradient using energy is called ________ transport.

Accepted Answer

active

Question 6

The _________ interior of the cell membrane repels ions and most polar molecules.

Accepted Answer

nonpolar, hydrophobic

Question 7

The movement of a substance from an area of high concentration to an area of low concentration is called _________.

Accepted Answer

diffusion

Question 8

Which three types of molecules can diffuse across the cell membrane without using transport proteins?

Accepted Answer

water, nonpolar molecules, very small molecules

Question 9

Which of the following is NOT one of the responses of a cell to a signal molecule?

Accepted Answer

formation of new DNA

Question 10

A(n) __________ solution will have no effect on cell size, as water will move into and out of the cell at equal rates.

Accepted Answer

isotonic

Question 11

Carrier proteins bind to a substance on one side of the cell and transport it to the other side in __________ diffusion.

Accepted Answer

facilitated

Question 12

Cells have ___________ proteins which bind to signal molecules, causing changes in the cell.

Accepted Answer

receptor

Question 13

The exchange of oxygen and carbon dioxide in the lungs is an example of ______________.

Accepted Answer

diffusion

Question 14

_____________ is the condition in which the concentration of a substance is equal throughout a space.

Accepted Answer

equilibrium

Question 15

A(n) ___________ solution will cause a cell to swell because water will move into the cell.

Accepted Answer

hypotonic

Question 16

_____________ is the movement of a substance into the cell using vesicles.

Accepted Answer

endocytosis

Question 17

Movement across the cell membrane that does not require energy from the cell is called _________ transport.

Accepted Answer

passive

Question 18

What types of proteins have polar passageways which allow for specific molecules to pass through the cell membrane?

Accepted Answer

channel proteins, ion channels

Question 19

The diffusion of water through a selectively permeable membrane is called __________.

Accepted Answer

osmosis

Question 20

A(n) ___________ solution will cause a cell to shrink because water will move out of the cell.

Accepted Answer

hypertonic

Questions 20