After you've tried the simulation at least once, click the button below to answer questions showing that you've understood the concepts covered here.
Simulation Assessment
30
You must try the simulation before answering the questions.
Click on the tabs at the top to explore different processes related to membrane potential. For each tab, you can block and unblock channels and pumps. Some tabs allow you to release excitatory and inhibitory neurotransmitters. Click on the channel key at the bottom to identify channels and pumps. Follow the membrane potential by looking at the graph at the bottom.
After you've tried the simulation at least once, click the button below to answer questions showing that you've understood the concepts covered here.
Simulation Assessment
Question 1 of 6
Questions
Question
Imagine that you added an excess of K+ ions to the outside of the cell. You measure the resting membrane potential immediately after the K+ is added. You would expect resting membrane potential to ___________ relative to resting membrane potential before the addition of K+.
A.
B.
C.
Correct.
Incorrect.
Question
If Na+ channels were not present in the membrane of a neuron, then resting membrane potential would _____________ compared to normal resting potential.
A.
B.
C.
Correct.
Incorrect.
Question
There is a mutation in an inhibitory ligand-gated channel so that it does not bind its ligand (the inhibitor). How would resting membrane potential be affected?
A.
B.
C.
D.
2
Correct.
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Incorrect.
Question
When inhibitory neurotransmitters bind their ligand-gated channel, the membrane becomes hyperpolarized because:
A.
B.
C.
D.
2
Correct.
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Incorrect.
Question
If voltage-gated sodium channels are blocked and excitatory neurotransmitters bind to their ligand-gated channels, then the:
A.
B.
C.
D.
2
Correct.
You have one more chance to answer the question correctly. Try again.
Incorrect.
Question
Each time an excitatory neuron binds to its ligand-gated channel, an action potential will occur.