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Which consequence results when intense light triggers isomerization in retinal molecules?

A)Signal transduction activating rhodopsin
B)Increased GTP hydrolysis commences
C)Cyclic GMP phosphodiesterase shuts down
D)Hyperpolarization impeding calcium influx

💡 Explanation

Isomerization initiates phototransduction; because light causes a change in retinal's molecular geometry, it activates rhodopsin via conformational change. This rather than halting hydrolysis or calcium influx, which occur later because the initial activation kickstarts the cascade.

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