Across
- 4. Living things that are made of only one cell are called ____________.
- 5. The oldest and smallest type of cell.
- 8. Bacteria, archaea and eukarya, are all examples of organism ___________.
- 9. There are ________ main principles of the cell theory.
Down
- 1. These cells have organelles and a nucleus.
- 2. Cells can be observed using a _____________.
- 3. Humans and animals are examples of ___________ organisms.
- 6. Bacteria, archaea, protista, fungi, plantae and animalia are all examples of _____________.
- 7. The ability to maintain steady internal conditions.