Equilibrium and resting potential

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

does the rate of diffusion change as we increase the number of particle?

Back (Answer)

No, it is about the same rate

Front (Question)

the greater difference in concentration the more __________ _______ needed to meet equilibrium

Back (Answer)

electrical force

Front (Question)

what does Nersnt equation measure?

Back (Answer)

electrical potential at electrochemical equilibrium

Front (Question)

originally which ions is more likely to be inside cell?

Back (Answer)

K+

Front (Question)

originally which ions is more likely to be outside cell?

Back (Answer)

Na+, Cl-

Front (Question)

which helps ion to pass through membrane?

Back (Answer)

channels

Front (Question)

why does ions move back and forth but not staying after they move to one side?

Back (Answer)

concentration force might cause them to move to one side, but the equal number of ions is attracted back by electrical force

Front (Question)

what is the estimate electric potential of K (EK+) ?

Back (Answer)

~-85mV

Front (Question)

what is the estimate electric potential of Na (ENa+) ?

Back (Answer)

~+55mV

#10

Front (Question)

what is the estimate electric potential of Cl (ECl-) ?

Back (Answer)

~ -66mV

#11

Front (Question)

what happen when Driving force is large and Permeability is large?

Back (Answer)

ions can move normally through membrane

#12

Front (Question)

what happen when Driving force is small and Permeability is large?

Back (Answer)

ions can still move through membrane due to large permeability & regardless of small driving force

#13

Front (Question)

what happen when Driving force is large and Permeability is small?

Back (Answer)

large driving force favor the movement of ions across membrane but small P restrict amount pass through -> not many ions can pass through

#14

Front (Question)

action potential?

Back (Answer)

quick electrical signal in nerve cells travel along axon which allow message to send to body

#15

Front (Question)

3 characteristics of action potential

Back (Answer)

• travel over long distance • high fidelity • rapid transmission

#16

Front (Question)

Back (Answer)

#17

Front (Question)

3 states of action potential

Back (Answer)

• depolarization • repolarization • hyperpolarization

#18

Front (Question)

membrane potential becomes more positive compared to the resting membrane potential

Back (Answer)

depolarization

#19

Front (Question)

membrane potential that was previously depolarized is brought back to the resting potential

Back (Answer)

repolarization

#20

Front (Question)

membrane potential becomes more negative compared to the resting membrane potential

Back (Answer)

hyperpolarization

#21

Front (Question)

which channels that axon has?

Back (Answer)

only potassium channel

#22

Front (Question)

how does the gradient distribute in K+ channel?

Back (Answer)

more polarization near the source than downstream

#23

Front (Question)

activation gate of Na+ channel open at?

Back (Answer)

depolarization

#24

Front (Question)

inactivation gate of Na+ channel open at?

Back (Answer)

repolarization