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  • The photosensitive compound in human eye is made up of  Option: 1 Opsin and retinal

The photosensitive compound in human eye is made up of

 

Option: 1

Opsin and retinal

 


Option: 2

Opsin and retinol

 


Option: 3

Transducin and retinene

 


Option: 4

Guanosine and retinol

 


Answers (1)

best_answer

 

 

Mechanism of Vision -

  • The light rays pass through the cornea, aqueous humor, lens and vitreous humor and are focused on the retina.
  • The light initiates graded potentials in rods and cones.
  • The photosensitive components of rods and cones are made up of opsin and retinal.
  • Light causes retinal to dissociate from opsin and opsin undergoes structural changes.
  • This generated potential differences in the photoreceptors and causes generation of graded potential.
  • The graded potential is transferred via bipolar cells to ganglion cells.
  • The action potential is generated in the ganglionic cells which are transmitted to the visual cortex of the brain via the optic nerve.
  • The neural impulses are analyzed in the brain and correct image is recognised.
     

Hence, The photosensitive components of rods and cones are made up of opsin and retinal is a correct answer.

Posted by

Rishi

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