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Flashcards in Membrane Transport Deck (11):
0

Two types of membrane transport

1. Passive
2. Active - requires ATP

1

Passive transport types

1. Simple diffusion
2. Facilitated diffusion

2

Simple diffusion

-diffusing right across the membrane
-o2 co2 lipids certain hormones
-flow down a concentration gradient

3

Facilitated diffusion

-help larger more polar things diffuse from higer to lower

4

Active tranport types

1. Primary
2. Secondary

5

Primary active transport

-go against concentration gradient
-directly coupled to ATP hydrolysis
-na/k pump

6

Secondary active transport

-Not dirctly coupled to ATP hydrolysis
-pump one solute across the membrane using ATP hydrolysis using a concentration gradient
-when it comes back down a gradient you use to to push something against the gradient

7

Na/k pump
Higher concentration of na inside or outside of cell?

Outside

8

Na/k pump
Higher concentration of k inside or outside of cell

Inside

9

Na/k pump

-Primary active transport
-pumps 3 na out of the cell
-pumps 2 k into the cell
-coupled to ATP hydrolysis

10

Na/k pump
Glucose

-glucose spontaneously comes in with na
-secondary active transport