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Questions and Answers
The light-dependent reactions occur in the stroma of the chloroplast.
The light-dependent reactions occur in the stroma of the chloroplast.
False
Aerobic respiration produces more ATP than anaerobic respiration.
Aerobic respiration produces more ATP than anaerobic respiration.
True
CO2 is fixed into organic compounds during the light-dependent reactions.
CO2 is fixed into organic compounds during the light-dependent reactions.
False
Water is a byproduct of the light-independent reactions.
Water is a byproduct of the light-independent reactions.
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Glucose is broken down into pyruvate in the mitochondria.
Glucose is broken down into pyruvate in the mitochondria.
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Anaerobic respiration occurs in the presence of oxygen.
Anaerobic respiration occurs in the presence of oxygen.
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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 (e.g., glucose)
- Occurs in specialized organelles called chloroplasts
Light-Dependent Reactions
- Light absorption by pigments (e.g., chlorophyll) in the thylakoid membrane
- Energy from light is used to generate ATP and NADPH
- Water is split into oxygen and hydrogen ions
Light-Independent Reactions (Calvin Cycle)
- CO2 is fixed into organic compounds using ATP and NADPH from the light-dependent reactions
- Produces glucose and releases oxygen as a byproduct
Respiration
Overview
- Process by which cells generate energy from the breakdown of glucose and other organic molecules
- Occurs in the mitochondria
Aerobic Respiration
- Glucose is broken down into pyruvate in the cytosol
- Pyruvate is transported into the mitochondria and converted into ATP through the electron transport chain
- Oxygen is the final electron acceptor, producing water as a byproduct
Anaerobic Respiration
- Occurs in the absence of oxygen
- Glucose is broken down into lactic acid or ethanol and carbon dioxide
- Produces less ATP than aerobic respiration
Photosynthesis
- Plants, algae, and some bacteria convert light energy into chemical energy in the form of organic compounds, such as glucose.
- This process occurs in specialized organelles called chloroplasts.
Light-Dependent Reactions
- Light absorption by pigments, such as chlorophyll, in the thylakoid membrane.
- Energy from light is used to generate ATP and NADPH.
- Water is split into oxygen and hydrogen ions.
Light-Independent Reactions (Calvin Cycle)
- CO2 is fixed into organic compounds using ATP and NADPH from the light-dependent reactions.
- Glucose is produced and oxygen is released as a byproduct.
Respiration
- Cells generate energy from the breakdown of glucose and other organic molecules.
- This process occurs in the mitochondria.
Aerobic Respiration
- Glucose is broken down into pyruvate in the cytosol.
- Pyruvate is transported into the mitochondria and converted into ATP through the electron transport chain.
- Oxygen is the final electron acceptor, producing water as a byproduct.
Anaerobic Respiration
- This process occurs in the absence of oxygen.
- Glucose is broken down into lactic acid or ethanol and carbon dioxide.
- Produces less ATP than aerobic respiration.
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Description
Learn about the process of photosynthesis, where plants and some organisms convert light energy into chemical energy, occurring in chloroplasts and involving light-dependent and light-independent reactions.
