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The chemistry of photosynthesis

Quiz by Anna Spanou

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8 questions
Show answers
  • Q1
    the main pigment responsible for absorbing light in photosynthesis is...
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    30s
  • Q2
    What is the function of the thylakoid membranes in chloroplasts?
    They regulate the movement of water and other molecules into and out of the chloroplast.
    They are responsible for synthesizing glucose during the light-independent reactions.
    They contain the photosystems that capture light energy and convert it to chemical energy.
    They store the energy that is captured by the pigments.
    30s
  • Q3
    What is the balanced chemical equation for photosynthesis?
    6CO2 + 6H2O -> C6H12O6 + 6O2
    6CO2 + 6H2O -> C6H12O6 + 6H2O
    C6H12O6 -> 6CO2 + 6H2O
    C6H12O6 + 6O2 -> 6CO2 + 6H2O
    30s
  • Q4
    What is the primary function of the light-dependent reactions in photosynthesis?
    To release oxygen as a byproduct of the reaction.
    To synthesize glucose from carbon dioxide and water molecules.
    To convert light energy into chemical energy.
    To generate NADPH and ATP molecules needed for the light-independent reactions.
    30s
  • Q5
    In which part of the chloroplasts do the light-independent reactions occur?
    Chlorophyll molecules
    Thylakoid membranes
    Grana
    Stroma
    30s
  • Q6
    What is the relationship between wavelength of light and energy level?
    All wavelengths of light have the same energy level.
    Longer wavelengths have higher energy than shorter wavelengths.
    Shorter wavelengths have higher energy than longer wavelengths.
    Wavelength and energy level are not related.
    30s
  • Q7
    What is the role of water in the light-dependent reactions of photosynthesis?
    To provide electrons to replace those lost by the photosystem II complex.
    To combine with carbon dioxide to produce glucose.
    To absorb and reflect light energy to the photosystems.
    To create oxygen gas as a waste product.
    30s
  • Q8
    What are the products of the light-independent reactions of photosynthesis?
    Water and carbon dioxide
    Glucose and other sugars
    ATP and NADPH
    Oxygen gas
    30s

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