Final answer:
Receptors are specialized cells that detect specific types of physical stimuli, including light and sound waves. Chemoreceptors, mechanoreceptors, and thermoreceptors are examples that respond to different stimuli such as chemicals, physical forces, and temperature, while light receptors are attuned to visible electromagnetic radiation.
Step-by-step explanation:
Each receptor is designed to detect certain types of physical stimuli, such as light waves or sound waves. Receptors are specialized according to the type of stimulus they sense due to their receptor specificity. For instance, touch receptors are sensitive only to physical stimuli like touch or pressure, whereas other receptors respond to different types of stimuli such as electromagnetic radiation.
Chemoreceptors interpret chemical stimuli like taste or smell, mechanoreceptors respond to physical stimuli including pressure and sound, and thermoreceptors are sensitive to temperature changes. Unique receptors such as those for electromagnetic radiation, like light receptors in humans, are specifically attuned to visible light, which is a form of electromagnetic wave that can travel in a vacuum and does not require a medium.