Skills: Annotating Chloroplasts
- Electron micrographs may differ in shape and size depending on where the cross section of the organelle was taken
- Usually the following features should be notable and visible:
- Round in shape
- A double membrane exterior
- Flattened discs, the thylakoids, arranged in stacks, the grana, connected by thin tubes, the lamellae
- Ribosomes and DNA are not usually visible
- Starch granules may be visible as dark spots within the stroma
