Membrane Potential

Which of these proteins in the plasma membrane of a neurone, are involved in maintaining the resting potential?

• Sodium ion leak channel proteins

• Potassium leak ion channel proteins

• Sodium-Potassium pumps

• Voltage gated sodium channels

• Voltage gated sodium channels

True or False.... The outside of a neuron is more negative relative to inside the neuron

• True

• False

When 'at rest' which ion is found in a higher concentration inside a neuron than outside?

• Sodium

• Potassium

• Chloride

Which term is used to describe channels that open in response to a change in voltage?

• electrical channels

• receptor gated channels

• voltage-gated channels

True or False.... sodium and potassium are actively transported across a neurone's cell membrane by a carrier protein.

• True

• False

Tags

NGSS.HS-LS1-3

When a neurone has not been activated, it is resting, the membrane is said to be...

• polarised

• depolarised

• hyperpolarised

The resting membrane potential is about...

• -70mV

• -50mV

• 35mV

• 70mV

Which ion is found in a higher concentration outside a neuron than inside?

• Sodium

• Potassium

• Chloride

True or False: A resting neurone isn't using any ATP

• True

• False

Tags

NGSS.HS-LS1-7

The correct notation for a sodium ion is...

• Na₊

• Na⁺

• Na2⁺

• Na²+