Bacterium has 4 syllables and the stress is on the second syllable.
| # | Sentence | |
|---|---|---|
| 1. | The toxin that causes diphtheria is produced by a normally benign bacterium when infected with a certain virus. | |
| 2. | This bacterium is resistant to penicillin. | |
| 3. | Do not confuse a virus with a bacterium. | |
| 4. | Koalas face many threats, including chlamydia – a bacterium that can cause pneumonia and infertility. |