1.   Though such bacteria have lower urease activity than H pylori, they may produce significant amounts of ammonia in the presence of high gastric juice concentrations of urea.

2.   Also, to be a truly effective weapon, the bacteria would have to be resistant to antibiotics like penicillin and Cipro.

3.   All bacteria have a kit of special proteins, known as enzymes, which repair damaged DNA.

4.   But scientists have long known that bacteria have some potent defenses.

5.   But the fact that the oxidizing bacteria also have an internal source of sulfide from their symbionts means that they are not dependent on an external supply.

6.   Drug-resistant bacteria from overprescribing have yet to cause a major public health problem.

7.   Even seemingly clean air contains billions of germs, and deadly bacteria often have harmless relatives.

8.   In this view, bacteria would not have to compete for food.

9.   Koshland also showed that bacteria have a rudimentary memory that affects their response to their outside world.

10.   Most bacteria have genomes in the form of a single circular chromosome.