Photosynthesis Lab 3: Microbial Types and Oxygenic Photosynthesis
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Questions and Answers

What is the distinguishing feature of anoxygenic photosynthesis?

  • Production of carbon dioxide
  • Use of chlorophyll
  • Production of oxygen (correct)
  • Use of bacteriorhodopsin
  • Which organisms are capable of anoxygenic photosynthesis?

  • Purple and green photosynthetic bacteria (correct)
  • Green plants
  • Cyanobacteria
  • Algae
  • What pigment is used by halophilic members of the Archaea for phototrophic growth?

  • Melanin
  • Rhodopsin
  • Chlorophyll
  • Bacteriorhodopsin (correct)
  • Which pigment is used in oxygenic photosynthesis?

    <p>Chlorophyll</p> Signup and view all the answers

    Why does the phototrophic growth mechanism found in halophilic members of the Archaea not qualify as photosynthesis by some definitions?

    <p>No pigment is involved</p> Signup and view all the answers

    Which type of microbial organisms are able to carry out photosynthesis?

    <p>Multiple types including cyanobacteria, algae, and purple and green photosynthetic bacteria</p> Signup and view all the answers

    What is the primary function of the 'light' reactions in photosynthesis?

    <p>Trap light energy and produce ATP</p> Signup and view all the answers

    Which molecules predominate in organisms carrying out oxygenic photosynthesis?

    <p>Chlorophyll a and b</p> Signup and view all the answers

    What is the role of the antenna molecules in the light-gathering process?

    <p>Absorb photons of radiant light</p> Signup and view all the answers

    What is the function of the 'dark' reactions in photosynthesis?

    <p>Dependent on the ATP and NADPH produced by the light reaction</p> Signup and view all the answers

    Which molecules are involved in the reduction of carbon dioxide to produce carbohydrates?

    <p>ATP and NADPH</p> Signup and view all the answers

    What is the term used to describe the pigment/protein complex where electron transfer occurs following excitation of the chlorophyll molecule?

    <p>Reaction centre</p> Signup and view all the answers

    'Dark' reactions are dependent on which products from the 'light' reactions?

    <p>ATP and NADPH</p> Signup and view all the answers

    What is the immediate result of chlorophyll absorbing photons of light?

    <p>'Excited' state of the molecule</p> Signup and view all the answers

    What is the function of chlorophyll in oxygenic photosynthesis?

    <p>Pass excited electrons to convert NADP+ to NADPH</p> Signup and view all the answers

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