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Questions and Answers
What is the primary function of the light-dependent reactions in photosynthesis?
What is the primary function of the light-dependent reactions in photosynthesis?
In which part of the chloroplast do the light-independent reactions take place?
In which part of the chloroplast do the light-independent reactions take place?
What is the byproduct of photosynthesis that is essential for most living organisms?
What is the byproduct of photosynthesis that is essential for most living organisms?
What is the overall equation for photosynthesis?
What is the overall equation for photosynthesis?
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What is the role of ATP and NADPH in the light-independent reactions?
What is the role of ATP and NADPH in the light-independent reactions?
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What factor affects photosynthesis by influencing the rate of light absorption?
What factor affects photosynthesis by influencing the rate of light absorption?
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Study Notes
Photosynthesis
Overview
- Process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds
- Occurs in specialized organelles called chloroplasts
Light-Dependent Reactions
- Light absorption by pigments such as chlorophyll and other accessory pigments
- Energy from light is used to generate ATP and NADPH
- Takes place in the thylakoid membranes of the chloroplast
Light-Independent Reactions (Calvin Cycle)
- Fixation of CO2 into organic compounds using ATP and NADPH produced in the light-dependent reactions
- Also known as the Calvin-Benson cycle
- Takes place in the stroma of the chloroplast
Equation
- 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
Factors Affecting Photosynthesis
- Light intensity
- Temperature
- Water availability
- CO2 concentration
Importance of Photosynthesis
- Produces oxygen (O2) as a byproduct, which is essential for most living organisms
- Provides energy and organic compounds for the food chain
- Supports nearly all life on Earth
Photosynthesis
Definition and Location
- The process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of organic compounds
- Occurs in specialized organelles called chloroplasts
Light-Dependent Reactions
- Absorption of light by pigments such as chlorophyll and other accessory pigments
- Energy from light generates ATP and NADPH
- Takes place in thylakoid membranes of the chloroplast
Light-Independent Reactions (Calvin Cycle)
- CO2 fixation into organic compounds using ATP and NADPH produced in light-dependent reactions
- Also known as the Calvin-Benson cycle
- Takes place in the stroma of the chloroplast
Photosynthesis Equation
- 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
Factors Affecting Photosynthesis
- Light intensity: affects the rate of photosynthesis
- Temperature: optimal temperatures range between 20-30°C
- Water availability: essential for photosynthesis
- CO2 concentration: affects the rate of photosynthesis
Importance of Photosynthesis
- Produces oxygen (O2) as a byproduct, essential for most living organisms
- Provides energy and organic compounds for the food chain
- Supports nearly all life on Earth
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Description
Learn about the process of photosynthesis, including light-dependent and light-independent reactions, and how plants convert light energy into chemical energy.
