When the photopigment rhodopsin is exposed to light, it a. ...

[shofmannx20]

When the photopigment rhodopsin is exposed to light, it
 
  a. joins an opsin with a retinal.
  b. is released from the axon terminal.
  c. breaks into an opsin and a retinal.
  d. turns a deep shade of purple.
  e. undergoes a change in electrical charge.

Question 2

Photopigments are molecules found in rods and cones that consist of
 
  a. two peptides and a sugar molecule.
  b. a carbon ring.
  c. a steroid ring.
  d. two fatty acid chains.
  e. an opsin and a retinal.

[leahm14]

Answer to Question 1

Answer: c. breaks into an opsin and a retinal.

Answer to Question 2

Answer: e. an opsin and a retinal.