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6. What is the name of the process in which rhodopsin is split up by light energy?
- hyperpolarisation
- bleaching
- glycolysis
7. What happens to the iris when the pupils constrict?
- The circular muscles contract and the radial muscles relax.
- The circular muscles relax and the radial muscles contract.
- Both the circular muscles and the radial muscles contract.
8. What is the function of the conjunctiva?
- It protects the cornea from damage.
- It focuses incoming light rays onto the retina.
- It controls the amount of light entering the eye.