Membrane transport

Question 1

Explain the movement of substances across cell membranes

Answer 1

Question 2

Describe intracellular and extracellular ion concentrations

Answer 2

Question 3

What are the types of membrane transport

Answer 3

Question 4

What is simple diffusion

Answer 4

Question 5

Differentiate diffusion vs osmosis

Answer 5

Question 6

Explain water movement across membranes

Answer 6

Question 7

What are ion channels

Answer 7

Question 8

What are the channel gating mechanisms?

Answer 8

Question 9

Explain voltage-gated K+ channels

Answer 9

Question 10

Describe bacterial KscA potassium channel

Answer 10

Question 11

Explain carrier protein facilitated diffusion

Answer 11

-Facilitated diffusion shows saturation kinetics similar to an enzyme

Question 12

Explain facilitated diffusion of glucose transporters

Answer 12

Question 13

What is the relationship between active transport and electrochemical gradients

Answer 13

Question 14

What is active transport?

Answer 14

Question 15

Explain Na+/K+ ATPase

Answer 15

Question 16

Describe parietal cell H+/K+ ATPase

Answer 16

Question 17

Explain active co-transport

Answer 17

Question 18

What are neurons?

Answer 18

Question 19

What is bioelectricity?

Answer 19

-Electrical currents and potentials generated by or occuring within living cells, tissues and organisms
-Results from interaction between membrane structure/chemistry, charged solutes and basic physcial principles
-All cells use/display bioelectricity

Question 20

What is resting membrane potential (RMP)

Answer 20

Regulated by Na/K ATPase electrogenic pump

Question 21

Describe action potentials in neurons

Answer 21

Question 22

Explain the propagation of action potentials

Answer 22