RP 8

• What is the function of dehydrogenase in chloroplasts?

  It catalyses the acceptance of electrons by NADP in the light dependent reactions.
• What is the purpose of DCPIP in photosynthesis experiments?

  DCPIP is a redox indicator dye that acts as an alternate electron acceptor instead of NADP.
• What color change occurs when DCPIP is reduced?

  DCPIP turns from blue to colourless when reduced.
• Why is the plant extract chilled in an ice-water bath?

  To lower the activity of enzymes to prevent them from breaking down the chloroplasts.