explain the structure chloroplast
Answer (1)
4th Feb, 2025
Chloroplasts are organelles in plant and algae cells that have a double membrane and a third internal membrane system. They are oval-shaped and contain chlorophyll, a green pigment that absorbs light for photosynthesis.
Structure
- Outer membrane: The external surface of the chloroplast
- Inner membrane: Located beneath the outer membrane
- Intermembrane: A thin layer between the inner and outer membranes
- Stroma: The space within the inner membrane that contains DNA and ribosomes
- Thylakoid membrane: An internal membrane system that forms a network of flattened discs called thylakoids
- Grana: Stacks of thylakoids
Function
- Photosynthesis: The process of converting carbon dioxide and water into glucose and oxygen using sunlight
- Energy storage: The storage of energy in the form of carbohydrates
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