. A mouse has a conditional knockout of TrpM5 in taste cells (noexpression of TrpM5 protein in all the taste cells). This mouse islikely to lose taste response to the following tastants EXCEPT:
| A. | Sweet |
| B. | Bitter |
| C. | Umami |
| D. | Sour |
Which of the following statements about bipolar receptive fieldsis FALSE?
| A. | In the dark, horizontal cells release GABA |
| B. | A light shining on the photoreceptors directly connected to anON bipolar cell causes bipolar cell depolarization |
| C. | A light shining on the photoreceptors connected to thehorizontal cell cause an OFF bipolar cell to depolarize |
| D. | A light shining on the photoreceptors connected to a horizontalcell cause an ON bipolar cell to depolarize |
