Biology, 27.11.2019 05:31 lilianajimva
Nicotine from cigarette smoke acts as a ligand and associates with the acetylcholine receptor on specific cells in the nervous system. nicotine eventually produces feelings of pleasure and well-being. the listed statements are descriptions of the events that happen in the cellular response to nicotine. place the events in the correct order to describe the steps in the signaling pathway.
a) the acetylcholine receptor is an ion channel, and when a ligand binds, the ion channel opens.
b) an influx of ions carries the signal to the reward areas of the brain.
c) nicotine binds to the transmembrane protein that normally binds the neurotransmitter acetylcholine.
d) the signal causes release of dopamine in the brain, which causes good feelings.
e) nicotine is quickly eliminated from the body (causing cravings for more cigarettes to produce good feelings).
Answers: 2
Biology, 21.06.2019 20:00, justin20080
Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) ferns b) mosses, hornworts, and liverworts c) charophytes d) angiosperms e) gymnosperms
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Biology, 21.06.2019 22:20, molinaemily009
Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria
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Nicotine from cigarette smoke acts as a ligand and associates with the acetylcholine receptor on spe...
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