Section 3: Movement of Molecules In/Out of Cells

Question 1

diffusion

Answer 1

passive, non-selective
move from high to low concentration

Question 2

osmosis

Answer 2

movement of water into the cell

Question 3

passive transporters

Answer 3

passive, selective
move molecules across concentration gradient
energy comes from concentration gradient

Question 4

active transporter pump

Answer 4

active, selective
moves against concentration gradient
uses ATP

Question 5

active co-transporter (symporter)

Answer 5

uses concentration gradient energy, ATP

Question 6

active co-trasnporter (antiporter)

Answer 6

molecules move in opposite direction

Question 7

vesicle mediated transport

Answer 7

moves large molecules
exocytosis (smooth ER to golgi to plasma membrane) or endocytosis

Question 8

water potential=

Answer 8

gravity potential+matrix potential+pressure potential+solute potential

Question 9

water moves toward ____ potential until equilibrium is reached

Answer 9

lower

Question 10

water movement stops by…

Answer 10

pressure created by cell walls from outside the cell

Question 11

what type of molecules can not cross membranes by diffusion?

Answer 11

charged, polar molecules (except H2O)

Question 12

3 different types of membrane proteins involved in active transport

Answer 12

pump, symporter, antiporter

Question 13

where are glycoproteins synthesized?

Answer 13

rough ER