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Questions and Answers
What is the overall equation for photosynthesis?
What is the overall equation for photosynthesis?
- 6 CO2 + 6 O2 + light energy → C6H12O6 + 6 H2O
- 6 CO2 + 6 H2O → C6H12O6 + 6 O2 (correct)
- C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + light energy
- 6 CO2 + 6 H2O + light energy → C6H12O6
Where do the light-dependent reactions of photosynthesis occur?
Where do the light-dependent reactions of photosynthesis occur?
- In the thylakoid membranes of the chloroplast (correct)
- In the stroma of the chloroplast
- In the nucleus
- In the mitochondria
What is the role of RuBisCO in photosynthesis?
What is the role of RuBisCO in photosynthesis?
- To produce ATP and NADPH
- To absorb light energy
- To split water into oxygen and hydrogen ions
- To convert CO2 into glucose (correct)
What is the byproduct of photosynthesis that supports life on Earth?
What is the byproduct of photosynthesis that supports life on Earth?
What type of photosynthesis does not produce oxygen?
What type of photosynthesis does not produce oxygen?
What is a factor that can affect the rate of photosynthesis?
What is a factor that can affect the rate of photosynthesis?
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Study Notes
Photosynthesis
Definition: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic compounds, such as glucose.
Overall Equation:
6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
Light-Dependent Reactions:
- Occur in the thylakoid membranes of the chloroplast
- Light energy is absorbed by pigments such as chlorophyll and converted into ATP and NADPH
- Water is split into oxygen and hydrogen ions
Light-Independent Reactions (Calvin Cycle):
- Occur in the stroma of the chloroplast
- ATP and NADPH from the light-dependent reactions are used to convert CO2 into glucose
- Requires the enzyme RuBisCO
Importance of Photosynthesis:
- Produces oxygen for aerobic respiration
- Provides energy and organic compounds for the food chain
- Supports life on Earth
Factors Affecting Photosynthesis:
- Light intensity and wavelength
- Temperature
- Water availability
- CO2 concentration
Types of Photosynthesis:
- Oxygenic photosynthesis (produces oxygen): found in plants, algae, and cyanobacteria
- Anoxygenic photosynthesis (does not produce oxygen): found in certain bacteria
Photosynthesis
- Definition: Process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of organic compounds, such as glucose.
Overall Equation
- 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
Light-Dependent Reactions
- Occur in thylakoid membranes of the chloroplast
- Light energy is absorbed by pigments like chlorophyll and converted into ATP and NADPH
- Water is split into oxygen and hydrogen ions
Light-Independent Reactions (Calvin Cycle)
- Occur in the stroma of the chloroplast
- ATP and NADPH from light-dependent reactions are used to convert CO2 into glucose
- Requires the enzyme RuBisCO
Importance of Photosynthesis
- Produces oxygen for aerobic respiration
- Provides energy and organic compounds for the food chain
- Supports life on Earth
Factors Affecting Photosynthesis
- Light intensity and wavelength
- Temperature
- Water availability
- CO2 concentration
Types of Photosynthesis
- Oxygenic photosynthesis: produces oxygen, found in plants, algae, and cyanobacteria
- Anoxygenic photosynthesis: does not produce oxygen, found in certain bacteria
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