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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.