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5 Written questions

5 Matching questions

  1. Reduction
  2. Photosynthesis
  3. Photon
  4. Grana
  5. Outputs of the light reactions
  1. a A fixed quantity of light energy
  2. b Transform light energy to chemical engergy stored in the bonds of sugar they make from carbon dioxide and water
  3. c Two chemical reactions consume energy from six molecules of ATP and oxidize six molecules of NADPH. Six molecules of 3-PGA are reduced, producing six molecules of G3P
  4. d Stacks of thylakoids
  5. e oxygen, ATP, NADPH

5 Multiple choice questions

  1. Carbon fixation
  2. Organisms that produce organic molecules from inorganic molecules using the energy of light
  3. Rubisco combines CO2 with a five-carbon sugar called ribulose bisphosphate (RuBP). The unstable product splits into two molecules of the three-carbon organic acid, 3-phosphoglyceric acid (3-PGA). For three CO3 entering, six 3-PGA result
  4. Make the food for the organisms in the biosphere
  5. Tiny pores where carbon enters and oxygen exits

5 True/False questions

  1. AutotrophsOrganisms that make their own food and thus sustain themselves without consuming organic molecules derived from any other organisms


  2. PhotosystemConsists of a number of light-harvesting complexes surrounding a reaction center complex


  3. 3rd step of the Calvin cycleReducation


  4. ThylakoidsA fixed quantity of light energy


  5. PhotorespirationA metabolic pathway that consumes oxygen, releases carbon dioxide, generates no ATP


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