Detection of Light - A Level Biology Quiz

What is the primary function of the eye?

• To detect temperature changes

• To detect sound waves

• To detect light intensity and wavelength

• To detect chemical signals

Which part of the eye controls the amount of light entering?

• Cornea

• Retina

• Lens

• Iris

What type of cells are primarily located around the outer retina?

• Rod cells

• Cone cells

• Bipolar cells

• Ganglion cells

What is the role of cone cells in the eye?

• Detecting light intensity

• Detecting sound

• Detecting color

• Detecting temperature

What happens to rhodopsin when light hits it?

• It breaks apart into retinal and opsin

• It becomes inactive

• It forms a new compound

• It changes color

What is the blind spot in the eye?

• A region with no photoreceptors

• A region with only rod cells

• A region with only cone cells

• A region with extra photoreceptors

What is the effect of light on rod cells?

• Depolarizes the cell

• Hyperpolarizes the cell

• Increases neurotransmitter release

• Decreases neurotransmitter release

What is the function of the optic nerve?

• To focus light on the retina

• To carry information to the brain

• To control the shape of the lens

• To regulate the amount of light entering the eye

What happens to sodium ion channels in rod cells when exposed to light?

• They become less permeable

• They become more permeable

• They close

• They open

What is the result of hyperpolarization in rod cells?

• Decreased neurotransmitter release

• No change in neurotransmitter release

• Increased neurotransmitter release

• Increased action potential frequency