Olfactory Transduction odorants 2.0 / 5 based on 1 rating ? BiologyUniversityOther Created by: jessicaCreated on: 18-12-12 17:02 What is the first step in olfaction? Odorants bind to membrane odorant receptor proteins 1 of 5 What happenens in the second step? The G protein is stimulated, activating adenylyl cyclase 2 of 5 What happens in the third step? cyclic AMP is formed, binding to a specific cation channel. 3 of 5 What happens in the fourth step? The cation channels are opened causing an influx of Na+ and Ca2+ ions. 4 of 5 What happens in the fifth step? The Ca2+ activated chloride channels are opened, causing the membrane to be depolarized 5 of 5
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