I think you might be talking about Typhoid Mary?
They are autotrophic
heterotrophs
bacteria (i think)
Bacteria
Some bacteria, called autotrophs, make their own food from the carbon in CO2. Most bacteria are heterotrophs, taking their food 'ready-made' from other sources.
No. It doesn't matter if you already had it. There are many types of bacteria that can cause food poisoning; having had it from one type of bacteria does not affect getting it from another.
flagella...
Chemoautotrophic
Chemoautotrophic
It is called a concession stand.
Bacteria
When bacteria from one food items gets onto another food item it is called cross-contamination.