Terms Related to Photosynthesis

Here are some terms related to photosynthesis:

  • Absorption spectrum: A curve showing the wavelength of light absorbed by photosynthetic pigment.
  • Action spectrum: The curve depicting the quantum yield at different wavelengths of light.
  • Cytochromes: Iron containing colored porphyrin or heme compounds which are exclusively electron transporters.
  • Cardinal values: Minimum, optimum and maximum values of a factor controlling a physiological process.
  • Cyclic photophosphorylation: Photophosphorylation coupled to cyclic electron transport chain. It is associated with PS-I and found in some bacteria.
  • Emerson effect: The increase in photosynthetic activity on the successive application of beams of different wavelengths.
  • First channels: Intergranal lamellae.
  • Photo-system: They are pigment systems for trapping light energy.
  • Photophosphorylation: Synthesis of ATP at the expense of radiant energy during photosynthesis.
  • Photosynthetic unit: The number of photosynthetic pigment molecules required to release one molecule of oxygen.
  • Quantasome: It is a distinct morphological structural unit in the thylakoid which embodies a photosynthetic unit.
  • RuBP: Ribulose biphosphate. Carbon dioxide acceptor in C3 cycle.

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