Question 5 of 6 Map A sapling learning Phototransduction uses a signal transduct

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Question 5 of 6 Map A sapling learning Phototransduction uses a signal transduction cascade s ar to mechanisms stimulated by hormones and neurotransmitters. However, the visual sensory apparatus is stimulated by photons, and converts light energy into a nerve impulse. Determine whether each of the the following events increases phototransduction or does not increase phototransduction (either by not initiating a signal or by terminating the signal). The abbreviation cGMP is used for guanosine 3,5-cyclic monophosphate (cyclic GMP), and PDE is used for phosphodiesterase. Phototransduction increases Phototransduction does not increase [cGMP1 decreases CGMP-gated ion channels close high [ca inhibits guanylyl cyclase transducin dissociates into TorGTP and T GDP bound to transducin By PDE bound to inhibitory subunit LCaer declines guanylyl cyclase cGMP 11 converted to all-trans-retina Tasubunit encounters PDE cGMP PDE converts cGMP Ta subunit hydrolyzes GTP to biologically inactive 5-GMP O Previous Check Answer Next Ext Hint

Explanation / Answer

Phototransduction ;

Phototransduction decreases ;

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