生物問題請教 - 考試

想請問大家幾題升物問題
1. For the processing of visual information in the central nervous system of
humans, the neuronal projections of ganglion cells to the left and right lateral
geniculate nuclei (LGN) are
A) all ipsilateral, meaning that left eye projections stay on the left side
of the brain, and vice versa.
B) all contralateral, meaning that left eye projections project to the right
side of the brain, and vice versa.
C) ipsilateral for the temporal side of each retina, and contralateral for
the nasal side of each retina.
D) ipsilateral for the nasal side of each retina, and contralateral for the
temporal side of each retina.
E) randomly crossed in terms of which side of the retina projects to either
the left or right side of the brain.
Answer: C
2.Experiments with genetically altered mice showed that the mice would consume
abnormally high amounts of bitter-tasting compounds in water after their
A) hormone receptors for digestive hormones were reduced or eliminated,
showing that bitter tastes are reinforced by digestive responses.
B) salt-taste cells were altered to express receptors for bitter tastants,
suggesting that animals have unregulated salt appetites.
C) visual sense was reduced or eliminated, suggesting that mice learn visual
cues about bitter tastes.
D) olfactory sense was reduced or eliminated, suggesting that mice learn odor
cues about bitter tastes.
E) sweet-taste cells were altered to express receptors for bitter tastants,
suggesting that the sensation of taste depends only on which taste cell is stimulated.
Answer: E
其實我是連題目都看不太懂
想請教各位高手幫幫忙
誠心感謝

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