The photosensitive compound in the human eye is made up of:
Correct answer: D. Opsin and retinal
- A. Opsin and retinol
- B. Retinol and retinene
- C. Guanosine and retinol
- D. Opsin and retinal
Explanation
The rods contain a photosensitive pigment called rhodopsin.Rhodopsin is composed of opsin and retinene.The opsin is a protein and is called scotopsin in rhodopsin.The retinene is an aldehyde of vitamin A and is called retinal.
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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