Resting Membrane Potential

Which one of the following is involved in maintaining a resting membrane potential?

• Na+/K+ ATPase pump moves 3Na+ in for every 2K+ out

• Na+/K+ ATPase pump moves 3K+ in for every 2Na+ out

• Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in

• Na+/K+ ATPase pump moves 3K+ out for every 2Na+ in

Tags

NGSS.HS-LS1-3

When a neuron is not engaged in an impulse.

• Resting potential

• Action potential

• Neural potential

• Synaptic potential

In resting potential, neurons have more _________ on the outside of the cell membrane.

• K+

• NaCl

• Na+

• Cl-

In resting potential, neurons have more ____________ on the inside of the cell membrane.

• NaCl

• Na+

• K+

• Cl-

When a neuron is resting, the inside of the axon has a ____________ charge.

• positive

• negative

The sodium-potassium pump....

• Sends (Na⁺) into the cell

• Sends (K⁺) into the cell

• Exchanges (K⁺) & (Na⁺) during depolarization

• Exchanges (K⁺) & (Na⁺) during hyperpolarization

What maintains the resting membrane potential in a neuron?

• sodium-potassium pumps

• sodium channels

• potassium channels

• gravity

Which ion is primarily responsible for the negative charge inside a neuron during resting membrane potential?

• A) Sodium (Na+)

• B) Potassium (K+)

• C) Calcium (Ca2+)

• D) Chloride (Cl-)

What is the typical value of the resting membrane potential in a neuron?

• A) +70 mV

• B) -70 mV

• C) 0 mV

• D) -90 mV

Which of the following best describes the role of the sodium-potassium pump in maintaining resting membrane potential?

• A) It allows passive diffusion of ions

• B) It actively transports ions against their concentration gradient

• C) It only transports sodium ions

• D) It only transports potassium ions