Which of the Following Statements About the Photosensitive Molecule Rhodopsin

question 146

Multiple Choice

Which of the following statements about the photosensitive molecule rhodopsin is false?

• A) Opsin is converted from the 11-cis to the all-trans form upon absorbing a photon of light.
• B) The retinal is the light-absorbing group.
• C) Photoexcited rhodopsin triggers a cascade of reactions that ultimately alters the membrane potential of a photoreceptor cell.
• D) Opsin is a protein; retinal is not a protein.
• E) 11-cis-retinal is covalently bonded to opsin.

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