Cellular Transport

Question 1

One way cells maintain homeostasis is by controlling the movement of substances across the ———–

Answer 1

cell membrane

Question 2

Movement across the cell membrane that does not require energy is called ———–

Answer 2

passive transport

Question 3

The difference in the concentration of a substance across a space is called a concentration ————-

Answer 3

gradient

Question 4

If there is a concentration gradient, substances will move from an area of high concentration to an area of ————— concentration

Answer 4

low

Question 5

The cell membrane is ————-

Answer 5

selectively permeable

Question 6

————- is the simplest type of passive transport

Answer 6

Diffusion

Question 7

The diffusion of water through a selectively permeable membrane is called ———–

Answer 7

osmosis

Question 8

The direction of water movement across the cell membrane depends on the concentration of free water ——–

Answer 8

molecules

Question 9

A solution that causes a cell to swell is called a ———– solution

Answer 9

hypotonic

Question 10

Organelles that collect excess water inside the cell and force water out are called —————-

Answer 10

contractile vacuoles

Question 11

The process of taking material into the cell by infolding the cell membrane is called —————

Answer 11

endocytosis

Question 12

In —————- diffusion, membrane proteins help molecules across the membrane

Answer 12

facilitated

Question 13

In diffusion, molecules ———–

Answer 13

spread out

Question 14

The lipid bilayer describes ——————–

Answer 14

the cell membrane

Question 15

Facilitated diffusion moves substances down their concentration gradient —————– using the cells energy

Answer 15

without