Question

Which of following is active type of retinene that is converted to .... by addition of opsin

Trans-retinene, trans retinol

cis-retinene, cis retinol

Cis-retinene, rhodopsin

Trans-retinene, rhodopsin​

Answer 1

Trans - Retinene , trans retinol

Answer 2

Cis Retinene is an active type of retinene that is converted into rhodopsin by addition of opsin

Explanation:

• Retinene is the chromophore  which attach with protein

• Rhodopsin is formed by opsin and the molecule of light absorbing

• The molecule that can absorb light is cis-retinene

• When cis retinene absorbs light it transformed into trans retinene which causes changes into rhodopsin form.  

• This cause chemical change and result in perception of images by brain