Which Statement Regarding the Transduction Mechanism in Vision Is True

question 24

Multiple Choice

Which statement regarding the transduction mechanism in vision is true of both vertebrates and invertebrates?

• A) G proteins activate cGMP phosphodiesterase.
• B) Light triggers the conversion of cis retinal to trans retinal.
• C) Cation channels are opened and Na⁺ enters the photoreceptor membrane.
• D) Second messengers IP₃ and DAG are synthesized.

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Definitions:

Disinherited

The act of deliberately removing or excluding a lawful beneficiary from receiving any part of an estate or inheritance in a will.

Codicil

A document that amends or adds to an existing will, allowing for changes without the need to draft a new will entirely.

Executed

Completed or carried out; in legal terms, it refers to a document or agreement that has been signed and made effective.

Testators

Individuals who have made a will or testament in preparation for their death.