Across
- 2. without definite shape or visible differentiation in structure
- 6. tenacious film formed of proteins, carbohydrates, and lipids
- 8. functions to protect the body against infection and disease
- 9. heterotrophic microorganism that can live and grow in the presence of free oxygen
Down
- 1. crystalline mineral component of bones and teeth that contains calcium and phosphate
- 2. microorganism that lives and grows in complete (or almost complete) absence of oxygen
- 3. a solution containing more of an ingredient that can be held in solution permanently
- 4. nucleus, point of origin
- 5. surrounding framework
- 7. Calcified dental plaque