Science

2. substances added to food to preserve, flavour, or enhance a product in some way.
5. humans can live normally with only one
6. a disease-causing microorganism
9. dome-shaped layer of muscle that separates the thoracic cavity from the abdominal cavity
12. the use or modification of living organisms to serve a useful purpose
13. blood pressure is abnormally high
14. a structure that contains strands of DNA or RNA surrounded by a protective protein coat
16. cytoplsmic structures made up of protiens and ribosomal RNAs
18. in order to study a particular bacterium it has to be ___________.
19. the study of heredity and variation

1. kills bacteria by making holes in their cells
3. two simple sugars that may link together
4. contain carbon, hydrogen, and oxygen and are used mainly as a source of energy.
6. technique for making many copies of DNA from a small sample
7. absorbed very quickly into the body
8. aerosol propellant
10. molecules made up of carbon, hydrogen and oxygen.
11. blood pressure abnormally low
15. similar to DNA but single stranded
17. protein coat surrounding genetic material