Question

place the steps in the correct order to review the process of biofilm formation. labels drop zones additional species join the biofilm secreting their own chemicals. pioneer bacteria attach to a surface. bacteria secrete sugars and proteins for attachment. quorum sensing begins. quorum sensing is at a minimum. some cells may escape and become planktonic. courtesy ellen swogger and garth james, center for biofilm engineering, montana state university

Explanation:

Biofilm formation starts with pioneer bacteria attaching to a surface. Then they secrete substances for attachment and quorum - sensing begins. Additional species join later. Finally, when quorum sensing is at a minimum, some cells may escape.

Answer:

1. Pioneer bacteria attach to a surface.
2. Bacteria secrete sugars and proteins for attachment. Quorum sensing begins.
3. Additional species join the biofilm secreting their own chemicals.
4. Quorum sensing is at a minimum. Some cells may escape and become planktonic.