Which ion channel is responsible for the rising phase of the action potential and why?

A. Na+ channels, because positive Na+ ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm
B. Na+ channels , because positive Na+ ions are at higher concentration inside the axon than outside, and so they leave the axon and raise Vm
C. K+ channels, because positive K+ ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm
D. K+ channels, because positive K+ ions are at higher concentration inside the axon than outside and so they leave the axon and lower Vm


Answer: A. Na+ channels, because positive Na+ ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm

Biology & Microbiology

You might also like to view...

Humans should be routinely vaccinated against Lyme disease.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Surrounding the grana is the thylakoid lumen

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

Bioremediation uses microbes to

A.) break down food B.) clean up pollutants C.) convert atmospheric nitrogen D.) produce carbohydrates

Biology & Microbiology

Which portion of the neuron typically receives information?

A) Glia B) Axon C) Dendrite D) Synaptic terminal E) Cell body

Biology & Microbiology