Questions and Answers
What occurs in Step 1 of Photosynthesis?
What happens in Step 2 of Photosynthesis?
Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2
What occurs during Step 3 of Photosynthesis?
The electrons move down to enzymes
Describe Step 4 of Photosynthesis.
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What is the purpose of Step 5 in Photosynthesis?
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What happens in Step 6 of Photosynthesis?
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What is the Calvin cycle?
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Study Notes
Photosynthesis Steps
- Light Dependent Reactions begin with CO2 and H2O entering the leaf.
- Light energy splits H2O molecules into O2, contributing to the oxygen exchange in the atmosphere.
- Electrons generated from water splitting move down to enzymes, facilitating further reactions.
- Sunlight activates a second pigment molecule, leading to the conversion of ADP into ATP and the transformation of NADP+ into NADPH.
Light Independent Reactions (Calvin Cycle)
- ATP and NADPH produced in the light reactions serve as energy sources for the Calvin cycle.
- The Calvin cycle fixes 3 CO2 molecules from the atmosphere and converts them into glucose, a simple sugar.
Calvin Cycle Overview
- Represents the second major stage of photosynthesis, occurring after light reactions.
- Focuses on CO2 fixation and the reduction of fixed carbon into carbohydrates, essential for plant energy and growth.
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Description
Test your knowledge of the steps involved in photosynthesis with these flashcards. Each card covers a key component of the light-dependent reactions, making it easier to understand the complex processes of how plants convert light into energy.