Chapter 14- Membrane transport

Question 1

What is the difference between active and passive transport?

Answer 1

Passive- no energy energy require, there are protein carriers, you can saturate with substrate, move down conc gradient,

Active, energy required, can saturated with substrate move up conc gradient.

Question 2

osmosis?

Answer 2

passive transport of water

Question 3

tonicity?

Answer 3

solute concentation

Question 4

hypotonicity vs hypertonicity vs isotonicity?

Answer 4

hypo- low solute conc
hyper-high solute conc
iso- equal solute conc

Question 5

What falls under passive transport?

Answer 5

diffusion, osmosis, facilitated diffusion

Question 6

Diffusion

Answer 6

the tendency for molecules to spread out into available space w/ no energy required

Question 7

facilitated diffusion

Answer 7

protein binds solute and moves it down conc gradient (mobile carries, channels, pores) molecules have to be right size,change, structure to diffuse down, no energy required

Question 8

Passive transport systems can be uniport, co-transport; symport or antiport…explain?

Answer 8

uni port- transports one solute
co-transport- two solutes
symport- carried in same direction
antiport- carried in opposite directions.