Chloroplasts

• The thylakoid is stacked into grana. This provides a large surface area for chlorophyll molecules to absorb light.
• The stroma contains enzymes like rubisco (used in the Calvin cycle) which are used in carbon dioxide fixation.
• The ribosomes and DNA in the stroma are used to synthesise proteins.
• Where does the light dependent stage of photosynthesis take place?

  In the thylakoid.
• Where does the light independent stage of photosynthesis take place?

  In the stroma.
• Chloroplasts may contain a range of wavelengths which can absorb a range of wavelengths for maximum light absorption.