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⟩ During phototransduction

* a) Hyperpolarisation occurs due to closure of the sodium channels

* b) Dark current only occurs in the presence of photoreceptors stimulation

* c) 11-cis-retinal molecules are converted to all-trans-retinal

* d) Transducin, a G protein converts GDP to GTP

* e) 10 photons are required to stimulate a single rod

Answer a. T b. F c. T d. T e. F

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