A2 OCR Biology Quiz F214

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  • Created by: Sally
  • Created on: 12-06-14 14:38

1. Why is the equation that summaries photosynthesis, over-simplified?

  • All of the below
  • Does not account of intermediate processes used such as Calvin cycle
  • Does not show enzymes used in the reactions e.g. Rubisco
  • Does not show that ATP/energy is another product
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2. What effect does very high temperature have on the rate of photosynthesis?

  • All of the above
  • Active site of rubisco will become denatured so no longer able to accept CO2
  • More water loss from stomata
  • Enzymes denature
  • Greater stress for the plant

3. What is the role of water in the light-dependent stage?

  • Source of reduced NADP
  • Photolysis
  • Make oxygen, to be released in the atmosphere
  • Keeps plant turgid

4. Why are photosynthetic pigments arranged in a funnel shape?

  • To maximize light absorption and capture as much light as possible
  • To make a photosystem
  • To form an antenna complex.
  • Provide large surface area for electron carriers

5. Define "Photosynthesis"

  • Light energy from the sun is converted into chemical energy which can be used to synthesis large inorganic molecules from organic molecules
  • Light energy from the sun is transformed into chemical potential energy which can be used to synthesis large organic molecules from inorganic molecules
  • Light energy from the sun used to make kinetic energy
  • Chemical energy used to hydrolyse complex organic matter

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