Rhodopsin

What cells are highly sensitive and function in dim light?

• Rods

• Cones

Cones are responsible for colour perception

• True

• False

Retinal is a light sensitive molecule derived from Vitamin C responsible for the detection of light.

• True

• False

How many photons does Retinal need to absorb to become photoexcited retinal?

• one

• two

• ten

• twenty

Photoexcited Retinal is

• 11-cis-retinal

• all-trans-retinal

What is the name of the transmembrane protein retinal is bound to in rod and cone cells?

• Opsinogen

• Octagon

• Opsin

• Ooops

How many opsins do cone cells have that are sensitive to light?

• 2

• 3

• 4

• 5

What colours are these?

• red, yellow and blue

• red, yellow and green

• red, green and blue

• green, yellow and blue

How many types of opsin do rod cells have

• one

• two

• three

• four

In a ROD cell Retinal bound to Opsin =

• Rode Island

• Rhododendron

• Rhodopsin