Bio 151 Exam 3 - UW-Madison Questions and Answers |Fall 2025/2026 Update | 100% Correct Latest

Bio 151 Exam 3 - UW-Madison Questions and Answers |Fall
2025/2026 Update | 100% Correct Latest
Question 1
Sour (acidic)
Correct Answer
H+ ion channels to depolarize, but also inhibit, K+ channels



Question 2
Rod cells
Correct Answer
more sensitive to light and allow vision in dim light



Question 3
Nerve cords and nerves
Correct Answer
bundles of the long fiberlike extensions from multiple nerve cells




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,Question 4
Vitreous humor
Correct Answer
jellylike substance found behind the lens in the posterior cavity of the eye that maintains its shape



Question 5
What do the hindbrain and midbrain control?
Correct Answer
Basic body functions and behaviors



Question 6
Cephalization
Correct Answer
concentration of sense organs and nerve cells at the front of an animal's body



Question 7
I-band
Correct Answer
Only actin, light, cross in the middle z-line, length changes during contraction




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, Question 8
What does the forebrain control?
Correct Answer
Controls all the higher mental functions



Question 9
Temporal summation
Correct Answer
Summation by a postsynaptic cell of input (EPSPs or IPSPs) from a single source over time.



Question 10
What does the cerebellum do?
Correct Answer
Controls balance, equilibrium, and muscle coordination.



Question 11
Cerebrum
Correct Answer
-Cerebral cortex - outer layer "grey matter" neuronal soma
-Inner layer white matter neuronal axons




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