Janus Is a Keen Baseball Player at the High School

Multiple Choice

Janus is a keen baseball player at the high school where you are employed as a nurse. He comes to your office and shows you an injury to his knee which he got by sliding into home base, scoring a game-winning run. His knee has a red, raw patch where the skin has been scraped off, and the area around the wound is swollen. Janus tells you that he washed his knee with soap and water to remove any germs and then put a bandage on it.
-Janus tells you he knows that yeast cells are also small and round. He asks how scientists can tell the difference between yeasts and bacteria. Select the choice that best answers his question.

A) Bacteria are microscopic.
B) Bacteria are photosynthetic.
C) Bacteria are unicellular.
D) Bacteria contain peptidoglycan.
E) Bacteria can be pathogenic.