Neuro

Question 1

Damage to which area of the brain would most likely result in hearing loss?

a. Occipital lobe
b. Temporal lobe
c. Parietal lobe
d. Brain stem

Answer 1

b. Temporal lobe

The temporal lobe contains the primary auditory cortex

Question 2

Which amino acid is likely to be found in the transmembrane domain of neuregulin-1?

a. W
b. S
c. K
d. D

Answer 2

a. W

The transmembrane region is hydrophobic

Question 3

Which of the following is not a function of astrocytes?

a. Hypoxia buffering
b. Structural support
c. Barrier protection
d. Interstitial fluid monitoring for pathogens

Answer 3

d. Interstitial fluid monitoring for pathogens

Question 4

Researchers use genetic engineering techniques to culture neuronal cells with sodium-potassium pumps that, for each molecule of ATP, transport 2 sodium cations for every 3 potassium cations; assuming that all other aspects are held equal, which of the following would be most affected by this change, as compared to what happens in a normal neuronal cell?

a. The diffusion force on potassium cations would be smaller and in the opposite direction
b. The diffusion force on potassium cations would be smaller and in the same direction
c. The diffusion force on potassium cations would be larger and in the opposite direction
d. The diffusion force on potassium cations would be larger and in the same direction

Answer 4

d. The diffusion force on potassium cations would be larger and in the same direction