Biofilms

2. 2nd, bacteria gather on a surface and secrete EPS
5. growth when cells in a dying colony consume the dead for nutrients
8. 3rd, bacteria multiply and the EPS grows
9. another name for a biofilm (we see it on our teeth)
11. one cell splitting into two cells (vertical gene transfer)
13. 4th, bacteria start to break off from the colony to form new biofilms
14. 2nd phase of growth, when bacteria are multiplying exponentially
17. in this 3rd phase of growth, the # of new cells = # of dying cells
21. 1st phase after inoculation, when bacteria are making the proteins they need to survive on a surface
22. bacteria communicate this way
23. 4th phase of growth, when a bacterial colony runs out of nutrients

1. made of repeating macromolecules, composed of many repeating molecules
3. a group of bacteria attached to each other and to a surface
4. cells in a biofilm can induce this to make their colony light up
6. the population density necessary to get something done as a group
7. stationary, fixed in one place
10. a sticky substance made of proteins, polysaccharides, and nucleic acids
12. cells in a biofilm can signal each other to start this process of making endospores
15. outside the cell
16. a molecule that can "turn on" an operon by changing the shape of a repressor protein
18. 1st, bacteria stop swimming and settle on a surface
19. proteins that cells in a biofilm can induce each other to make
20. free-floating or swimming (like algae do)