Moderate

Which one of the following statements is not correct?

Correct answer: C. Retinal is a derivative of vitamin C

  • A. Retinal is the light absorbing portion of visual photo pigments.
  • B. In the retina, the rods have the photopigment rhodopsin while cones have three different photopigments.
  • C. Retinal is a derivative of vitamin C
  • D. Rhodopsin is the purplish red protein present in rods only

Explanation

The retinal pigment is an aldehyde of vitamin A.

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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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