Skill:
• Drawing of the ultrastructure of eukaryotic cells based on electron micrographs
Animal Cell (click to label)
Key Features:
- Nucleus – shown as double membrane structure with pores
- Mitochondria – double membrane with inner one folded into cristae ; no larger than half the nucleus in size
- Golgi apparatus – shown as a series of enclosed sacs (cisternae) with vesicles leading to and from
- Endoplasmic reticulum – interconnected membranes shown as bare (smooth ER) and studded (rough ER)
- Ribosomes – labelled as 80S
- Cytosol – internal fluid labelled as cytosol (‘cytoplasm' is all internal contents minus the nucleus)
Plant Cell (click to label)
Key Features:
- Vacuole – large and occupying majority of central space (surrounded by tonoplast)
- Chloroplasts – double membrane with internal stacks of membrane discs (only present in photosynthetic tissue)
- Cell wall – labelled as being composed of cellulose ; thicker than cell membrane
- Shape – brick-like shape with rounded corners