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5 Written questions

5 Matching questions

  1. Producers
  2. Wavelength
  3. Autotrophs
  4. Outputs of the light reactions
  5. Carbon fixation
  1. a oxygen, ATP, NADPH
  2. b Organisms that make their own food and thus sustain themselves without consuming organic molecules derived from any other organisms
  3. c The distance between the crest of two adjacent waves
  4. d Make the food for the organisms in the biosphere
  5. e 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

5 Multiple choice questions

  1. CO2
  2. Tiny pores where carbon enters and oxygen exits
  3. Alternate modes of carbon fixation have evolved that save water without shutting down photosynthesis. Preced the Calvin cycle by first fixing CO2 into a four-carbon compound. Keeps its stromata mostly closed
  4. 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
  5. First organic compound produced is the three-carbon compound 3-PGA.Common and widely distributed; they include soy beans, oats, wheat and rice.

5 True/False questions

  1. Outputs of the Calvin cycleCO2


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


  3. 4th step of the Calvin cycleRegeneration of RuBP


  4. ChlorophyllA light-absorbing pigment in the chloroplasts that plays a central role in the chloroplasts


  5. 2nd step of the Calvin cycleReducation