potentials

Question 1

what are the different kinds of membrane potential and when are they used?

Answer 1

Action potentials: transmit signals over long distances

Graded potentials: Decide when an action potential should be fired

Resting membrane potentials:
Keep cells ready to respond

Question 2

The resting membrane potential definition

Answer 2

the electrical charge difference across a cell membrane when it’s at rest

outside 0mv and inside is negative relative to that

Question 3

how does the sodium-potassium pump contribute to the ionic basis of the resting membrane potential?

Answer 3

Contributes about 5mV
Protein actively transports :
3 NA+ OUT
2 K+ IN

Question 4

how does the Selective permeability of the membrane contribute to the ionic basis of the resting membrane potential?

Answer 4

allows certain ions to pass through:
At rest, potassium ions have greater permeability than sodium ions due to more open potassium channels
so

Question 5

what is the