1. While taking this test, your central nervous system receives information show
ID: 145555 • Letter: 1
Question
1. While taking this test, your central nervous system receives information shown here on your device's screen via your eyes. This information is carried by_________________.
astrocytes
glial cells
None of the above
afferent neurons
efferent neurons
2.
In the action potential shown above, there is a series of celluler events that drive the change in the membrane potetntial. Choose the cellular event that is NOT dipected correctly (in other words, there is discrepancy between cellular event and the position that it occurs).
Position 3 – Potassium channels starting to open.
Position 2 – Some sodium channels are open.
Position 4 – Sodium channels are open.
Position 1 – Sodium channels are closed.
3.Which of the following DOES NOT represent potential energy?
Gradient generated by the concentrations of molecules across a cell membrane.
Only two of the answers represent potential energy.
The bonds between molecules forming the pyruvate molecule.
Gradient generated by electrical charges of molecules across a cell membrane.
All three answers represent potential energy.
astrocytes
glial cells
None of the above
afferent neurons
efferent neurons
Explanation / Answer
1. Afferent neurons are responsible for sending the informationto the central nervous system via eye. Hence, correct answer is d.
3. Potential energy are stored in biological macromolecules in the form of bonds they have. Hence, the bonds forming the private molecules is the correct answer. Hence, the correct option is c.
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