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Question

The rods and cones of a vertebrate retina function to:

A
Focus light
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B
Transduce light
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C
Amplify light
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D
Filter light
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Solution

The correct option is C Transduce light
The rods and cones are the site of transduction of light to a neural signal. Both rods and cones contain photopigments. In vertebrates, the main photopigment, rhodopsin, has two main parts: an opsin, which is a membrane protein (in the form of a cluster of α-helices that span the membrane), and retinal—a molecule that absorbs light.

So, the correct answer is 'Transduce light'.

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