Photosynthesis - unit 4 AQA Biology a-level

Quiz about photosynthesis, can be used for any specification but fitted to the aqa biology specification at A2 :)

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  • Created by: Mirte
  • Created on: 05-06-14 11:55

1. Why are there different pigments present in the chloroplast?

  • Because each pigment is a different colour
  • Because each pigment is located in a different part of the chloroplast and are thus in different conditions
  • Because each pigment absorbs different wavelengths of light
  • Because some pigments absorb infrared radiation
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2. What is the function of light in the light-depedent reaction?

  • To make ATP, photolysis of water, To enable the chlorophyll to take up an electron
  • To make ATP, photolysis of water, to excite an electron in chlorophyll
  • photolysis of water, to reduce glycerate-3-phospate, to make ATP
  • To reduce CO2, to make ATP, to excite an electron in chlorophyll

3. Why is hot methanol used to drop samples of photosynthesising algae into in the Calvin lollipop experiment?

  • Because it is a limiting factor to photosynthesis
  • Because it instantly stops the reaction by denaturing enzymes for photosyntheis
  • Because it instantly stops the reaction by boiling the water present in the algae
  • because it allows substances into which C14 is incorporated to be identified

4. Where does the light-independent reaction take place?

  • In the stroma
  • In the thylakoid membrane of the chloroplast
  • In the chloroplast membrane
  • In the stomata

5. In the light-indepedent reaction (Calvin cycle) Ribulose biphospate combines with CO2, aided by enzyme action. What is the product of this?

  • Glycerate 3 phospate
  • Phosporylated glucose
  • Triose phospate
  • ADP and Pi


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