Chapter 8

Question 1

indirect active transport

Answer 1

simultaneous movement of solutes-> one moving down gradient, other moving up gradient

Question 2

direct active transport

Answer 2

accumulation of molecules against concentration gradient with help of an exergonic chemical reaction

Question 3

what direction does water move during osmosis

Answer 3

hypotonic to hypertonic

Question 4

channel proteins

Answer 4

form hydrophilic channels in membrane that allow for diffusion

Question 5

carrier protein

Answer 5

binds solute molecules on one side of membrane and changes conformation to release solutes to other side

Question 6

facilitated diffusion

Answer 6

involves moving down gradient but is mediated by proteins

Question 7

what is an exergonic reaction

Answer 7

energy is released

Question 8

Simple Diffusion

Answer 8

direct, unaided movement of solutes (down the gradient)

Question 9

what are the types of ATPases

Answer 9

P-type
V-type
F-type
ABC-type

Question 10

Endocytosis

Answer 10

transport of large molecules into the cell

plasma membrane pinches off and forms a vesicle around the molecule

Question 11

Exocytosis

Answer 11

transport of large molecules out of the cell

vacuole fuses with cell membrane and dumps contents outside