11.   As a result, different bacteria are becoming resistant to penicillin and its derivatives.

12.   As the biofilm builds up, Reid says that bacteria may be washed away a few at a time or occasionally released as large clumps.

13.   At issue is the bacteria known as Helicobacter pylori, the cause of most ulcers.

14.   At these temperature points, any possible bacteria is dead, yet the turkey is still moist.

15.   Bacteria can be diabolical.

16.   Bacteria can be ground into the interior of ground beef during the grinding process.

17.   Bacteria are always present in our mouth.

18.   Bacteria have been on Earth for at least three billion years.

19.   Bacteria are prokaryotic, meaning they consist of tissue called cytoplasm, a membrane to contain it, and little else.

20.   A dead bacterium is nothing but a dead end.