Photosynthesis

Last update by mayurcooled on 04/23/2014
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What is the ultimate source of energy to support most life on Earth?

Answer:
sunlight

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    In plant cells, where are the photosynthetic membranes found?
    chloroplasts
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    In the electromagnetic spectrum, the type of radiation that we call visible light occurs between what?
    ultraviolet radiation & infrared radiation
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    What are the products of the light reactions of photosynthesis?
    high-energy electrons
    ATP
    NADPH
    oxygen
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    When light strikes chlorophyll molecules, they lose electrons, which are ultimately replaced by what?
    splitting water
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    Photosynthesis is a redox reaction. This means that H2O is ________ during the light reactions & CO2 is _______ during the Calvin cycle.
    oxidized ... reduced
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    What product of the light reactions of photosynthesis is consumed during the Calvin cycle?
    NADPH
  • JanetMayorga
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    What is the overall function of the Calvin cycle?
    making sugar
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    Why do C4 plants occur more commonly in desert conditions?
    they can fix carbon at the lower CO2 concentrations that develop when the stomata are closed
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    What sequence correctly represents the flow of electrons during photosynthesis?
    H2O ---> NADPH ---> Calvin cycle
  • JanetMayorga
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    What best describes the difference between autotrophs & heterotrophs?
    Autotrophs, but not heterotrophs, can nourish themselves beginning with CO2 & other nutrients that are inorganic.