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How does lens focuses light on the photoreceptor cells?
When light enters the eye, the lens refracts and bends the light to focus it onto the retina, where the photoreceptor cells (rods and cones) are located. The shape of the lens can be adjusted by the ciliary muscles to change the focus, allowing clear vision of objects at different distances. The light focused on the photoreceptor cells stimulates them to send signals to the brain via the optic nerve for processing and interpretation of the visual information.
Do humans have energy within them?
Yes, humans have energy within them in the form of chemical energy stored in the molecules of their cells, which is used for various bodily functions and activities.
Which type of photoreceptor cells, cones or rods, are more sensitive to light?
Rods are more sensitive to light than cones.
Why can wavelengths of light be seen by humans?
Wavelengths of light fall within the visible spectrum, which is the range of electromagnetic radiation that the human eye is able to detect. Photoreceptor cells in the retina convert light energy into electrical impulses that are interpreted by the brain as different colors.
Where in a cell is light absorbed?
Light is primarily absorbed by pigments such as chlorophyll located in the chloroplasts of plant cells during the process of photosynthesis. In animal cells, light may be absorbed by specialized light-sensitive molecules such as rhodopsin in the photoreceptor cells of the eye.
