Neuron Communication and Action Potential Quiz

What is the name of the electrical impulse that neurons send responsible for every action, thought, and emotion?

• Resistance

• Current

• Voltage

• Action potential

What is the measure of potential energy generated by separated charges?

• Amps

• Volts

• Ohms

• Watts

Tags

NGSS.HS-PS3-5

What is the resting membrane potential of a neuron?

• -40 mV

• -110 mV

• -70 mV

• -90 mV

What is the process that kicks in to rebalance the charges during an action potential?

• Depolarization

• Hyperpolarization

• Repolarization

• Saltatory conduction

Tags

NGSS.HS-PS2-5

What type of channels open at certain membrane potentials and close at others?

• Ion channels

• Mechanically gated channels

• Ligand-gated channels

• Voltage-gated channels

What is the threshold membrane potential required for an action potential to kick in?

• -55 mV

• -40 mV

• -70 mV

• -90 mV

What is the phenomenon that prevents signals from traveling in both directions down the axon at once?

• Refractory period

• Hyperpolarization

• Depolarization

• Repolarization

What is the name of the process where the current can effectively leap from one gap in the myelin to the next?

• Saltatory conduction

• Voltage-gated channels

• Mechanically gated channels

• Ligand-gated channels

What varies to indicate the flow of positively or negatively charged ions across the resistance of neurons' membranes?

• Resistance

• Conduction velocity

• Current

• Voltage

What is the factor that affects a neuron’s transmission speed the most?

• Voltage-gated channels

• Resistance

• Conduction velocity

• Myelin sheath