Microbes

2. A type of very small microorganism, has no cells and needs a host cell to reproduce.
4. The first antibiotic ever discovered
6. "Living" thing that can only be seen with a microscope
11. A microorganism that has the ability to cause disease
14. A word that means "can be spread from person to person"
16. Fleming The scientist credited with the discovery of antibiotics.
17. The ability to resist disease
18. A preparation of weakened, killed or parts of a pathogen and is designed to result in immunity
22. Word to describe a rod shaped bacterium (singular)
24. Growth of microorganisms in controlled conditions such as an agar plate
25. Means two. A prefix used to describe how bacteria group together
26. plate A petri dish containing a nutrients and agar for culturing microorganisms
27. Means chains. A prefix used to describe how bacteria group together
28. An extract from seaweed used to grow microorganisms.

1. A person who studies microscopic organisms
3. The study of microorganisms
5. One billionth of a metre
6. One millionth of a metre
7. A type of unicellular microorganism that has a cell wall but no nucleus.
8. Means groups or clusters. A prefix used to describe how bacteria group together
9. Thread-like structures of a fungus, used for feeding and reproduction (plural)
10. Chemical produced by a pathogen that contributes to making a person sick
12. The reproductive cell of a fungus
13. fission A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
15. When a microorganism gets into the body
19. Jenner The scientist credited with developing the first vaccines, especially for smallpox
20. A chemical that kills bacteria or slows their growth without harming body cells.
21. A type of microorganism that has a nucleus and includes moulds, yeasts, mushrooms, toadstools
23. Made of a single cell
24. Word to describe a round shaped bacterium (singular)