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5 Written questions

5 Matching questions

  1. Grana
  2. Carbon fixation
  3. 2nd step of the Calvin cycle
  4. Photoautotrophs
  5. C4 plants
  1. a Reducation
  2. b Stacks of thylakoids
  3. c 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. d 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. e Organisms that produce organic molecules from inorganic molecules using the energy of light

5 Multiple choice questions

  1. A series of chemical reactions uses energy from ATP to rearrage the atoms in the five G3P molecules (15 carbons total), forming three RuBP molecules (15 carbons). These can start another turn of the cycle
  2. First organic compound produced is the three-carbon compound 3-PGA.Common and widely distributed; they include soy beans, oats, wheat and rice.
  3. Consists of a number of light-harvesting complexes surrounding a reaction center complex
  4. Absorb solar energy and convert it to chemical energy stored in ATP and NADPH
  5. Release of one molecule of G3P

5 True/False questions

  1. 1st step of the Calvin cycleCarbon fixation


  2. Release of one molecule of G3POne molecule of G3P you see leaving the cycle is the net product of photosynthesis. A plant cell uses G3P to make glucose and other organic compounds


  3. Outputs of the Calvin cycleCO2


  4. Outputs of the light reactionsEnergy from light, water, ADP + P, NADP+


  5. Inputs of the Calvin cycleSugar, NADP+, ADP + P