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GCSE Photosynthesis (AQA)

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  • What other variables must be kept the same in this investigation?
    species/age/surface area of plant, volume of water, temperature, pH
  • Is photosynthesis endothermic or exothermic?
    endothermic
  • If a leaf is in the shade, would you expect it to have more or less chlorophyll?
    More
  • In which plant structure does photosynthesis take place?
    Chloroplast
  • How could we make this investigation more PRECISE
    collect and measure the volume of gas in a syringe/cylinder
  • what makes temperature graph lower when it is too warm?
    denatured enzymes
  • What shape graph will demonstrate the affect increasing temperature have on the rate of respiration
    bell shaped curve - peak at optimum
  • Where does the energy for photosynthesis come from?
    sunlight
  • What is the name of the green pigment inside plants?
    chloropyll
  • What is the term that describes the feature that stops a reaction rate from getting any faster?
    Limiting Factor
  • If we move the flask closer to the lamp - how will this affect the rate of bubbles?
    Increase
  • If light intensity is increased - what factors might limit the rate of reaction?
    CO2, Water, temperature
  • carbon dioxide + water --> ?
    glucose + oxygen
  • If CO2 concentration is increased - what shape graph will the rate of respiration make?
    increase and then plateau
  • In which leaf cells do most photosynthesis take place?
    Palisade Cells
  • What makes the temperature graph rate low when it is too cold?
    kinetic energy