Chloroplasts
- Created by: jaaaz_v
- Created on: 07-11-16 13:53
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- Chloroplasts
- Chloroplast envelope
- Double cell membrane
- Similar to mitochondrion
- Circular DNA
- Independent of DNA in plant cell nucleus
- This DNA codes for proteins required for photocynthesis
- Similar to mitochondrion and photosynthetic bacteria
- Thylakoid membranes
- Series of flattened sacs
- Allow compartmentalisation
- Allow different enzyme driven reactions to occur at once
- Site of photosynthesis (have light harvesting units)
- Site of electron carriers + ATP synthesis
- Grana
- Granum (singular)
- Create a large surface area for photosynthesis
- Increase light absorbing capacity
- Similar to the infolding of cell membranes for photosynthetic pigments in some bacteria
- Lamella
- Membranes which join the grana together
- Stroma
- Equivalent to cytoplasm
- Contains photosynthetic enzymes for the calvin cycle
- Similar to mitochondrion (matrix)
- Ribosomes
- Suspended in the stroma
- Synthesise enzymes needed in photosynthetic reactions
- No endoplasmic reticulum
- Chloroplast envelope
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