How Photosynthesis Works

29 CQ
5 Lessons
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    7 CQ
    1. Overview of Photosynthesis
    A lesson with Craig Savage
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    Explore light reactions, the Calvin cycle, and the equation for photosynthesis that allows plants to use carbon dioxide and energy from the sun to form glucose.

    Overview of Photosynthesis
    with Craig Savage

    Explore light reactions, the Calvin cycle, and the equation for photosynthesis that allows plants to use carbon dioxide and energy from the sun to form glucose.

  • Playing
    5 CQ
    2. Photosynthesis Light Reactions
    A lesson with Craig Savage
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    This lesson teaches you more about photosynthesis and how plants take energy from the sun to generate ATP, NADPH, and oxygen through light reactions.

    Photosynthesis Light Reactions
    with Craig Savage

    This lesson teaches you more about photosynthesis and how plants take energy from the sun to generate ATP, NADPH, and oxygen through light reactions.

  • Playing
    6 CQ
    3. Chemiosmosis and Photophosphorylation
    A lesson with Craig Savage
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    Learn about the processes that take place during the photosynthesis light reactions, including how chemiosmosis drives the production of ATP.

    Chemiosmosis and Photophosphorylation
    with Craig Savage

    Learn about the processes that take place during the photosynthesis light reactions, including how chemiosmosis drives the production of ATP.

  • Playing
    5 CQ
    4. Photosynthesis and the Calvin Cycle
    A lesson with Craig Savage
    View lesson

    Learn how the Calvin cycle uses the ATP and NADPH formed during the light reactions to generate glucose - fulfilling the ultimate purpose of photosynthesis.

    Photosynthesis and the Calvin Cycle
    with Craig Savage

    Learn how the Calvin cycle uses the ATP and NADPH formed during the light reactions to generate glucose - fulfilling the ultimate purpose of photosynthesis.

  • Playing
    6 CQ
    5. Carbon Fixation Pathways: C4 and CAM
    A lesson with Craig Savage
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    Learn how plant physiology affects the efficiency of photosynthesis and how the C4 and CAM pathways address issues like that of photorespiration.

    Carbon Fixation Pathways: C4 and CAM
    with Craig Savage

    Learn how plant physiology affects the efficiency of photosynthesis and how the C4 and CAM pathways address issues like that of photorespiration.

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    29 Comments
    500 characters max

    Shaikh Z
    Great lecture.But i have 3 questions. 1-No ATP is produced during second electron transport chain in non cyclic pathway? 2- in non cyclic pathway when electron from photosystem680 travels to photosystem 700 how does same electron get strike by light? 3- in non cyclic pathway why electron is still high energetic even after travelling second electron transport chain?
    appreciate appreciated
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    David I
    Thank you very much, I am taking a Pre-AP Biology test tomorrow, and this was very useful.
    appreciate appreciated
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    Dalton M
    great video, helped make photosynthesis understandable
    appreciate appreciated
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    Shruti S
    great help thank you very much
    appreciate appreciated
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    Renee B
    So, does a plant then run both the cyclic and the non-cyclic pathway simultaneously? Are the ground state electrons that are "produced" at the end of P700 used again in P700 along with the "new" ground state electrons received from P680?
    appreciate appreciated
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    Craig Savage
    Plants do run both the cyclic and the non-cyclic pathways at the same time. The answer to your second question is "yes"
    appreciate appreciated
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