Ophthalmology Question:
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During phototransduction:
Answer:
* 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
* 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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