What is the purpose of photoreceptors?(1 point)
Responses
They focus the light coming into the eye.
They focus the light coming into the eye.
They change light to electrical signals.
They change light to electrical signals.
They receive light and turn it into an image.
They receive light and turn it into an image.
They contract and relax to control the pupil.
They focus the light coming into the eye.
They change light to electrical signals.
They receive light and turn it into an image.
In which organizational level is the eye?(1 point)
Responses
organ systems
organ systems
cells
cells
tissues
tissues
organs
organs
Many parts of the eye work to focus or control light except the(1 point)
Responses
lens.
lens.
retina.
retina.
cornea.
cornea.
pupil.
retina
The purpose of photoreceptors is to receive light and turn it into an image.
The correct answer is: They change light to electrical signals.
Photoreceptors are specialized cells found in the retina of the eye. Their main purpose is to detect and respond to light stimuli. When light enters the eye, it passes through the lens and reaches the retina, where the photoreceptors are located. These cells contain light-sensitive pigments that undergo chemical changes when exposed to light.
When the photoreceptors are stimulated by light, they convert the light energy into electrical signals. This process is known as phototransduction. The electrical signals are then transmitted to the brain via the optic nerve, where they are interpreted as visual information.
The other options mentioned - focusing the light, turning light into an image, and controlling the pupil - are functions performed by other parts of the eye, such as the cornea, iris, and lens.