Place the following steps in the correct order for transduction of a chemical odorant into a nerve signal.
1)Odorants reach receptors in the cilia of olfactory neurons.
2)cAMP opens ions channels that allow sodium and calcium ions to enter the cell.
3)The G-protein activates an enzyme,adenylate cyclase,to convert ATP into cyclic AMP (cAMP).
4)The binding of an odorant activates a G-protein which then detaches from the receptor.
5)The membrane is depolarized.Depolarization that reaches threshold at the axon hillock triggers action potential and transduction has been achieved.

Question

Place the following steps in the correct order for transduction of a chemical odorant into a nerve signal. 
1)Odorants reach receptors in the cilia of olfactory neurons.
2)cAMP opens ions channels that allow sodium and calcium ions to enter the cell.
3)The G-protein activates an enzyme,adenylate cyclase,to convert ATP into cyclic AMP (cAMP).
4)The binding of an odorant activates a G-protein which then detaches from the receptor.
5)The membrane is depolarized.Depolarization that reaches threshold at the axon hillock triggers action potential and transduction has been achieved.

Quizplus · Accepted Answer

The correct sequence for the transduction of a chemical odorant into a nerve signal starts with the odorant reaching the receptors (1), followed by the activation of a G-protein when an odorant binds to the receptor (4), then the G-protein activates adenylate cyclase to convert ATP into cAMP (3), next cAMP opens ion channels allowing sodium and calcium ions to enter the cell (2), and finally, the membrane depolarizes to trigger an action potential (5).

Place the Following Steps in the Correct Order for Transduction