Question

Geraldo got sick from eating vacuum-packed deli meat. The bacteria must have been _____. aerobic or facultative anaerobic anaerobic or facultative anaerobic aerobic toxin-producing

Answer 1

Answer is: anaerobic or facultative anaerobic.
In vaccum-packed deli meat there is no oxygen.
Anaerobic bacteria does not require oxygen for growth.
Facultative bacteria can growth by aerobic respiration if oxygen is present, but can switch to anaerobic respiration if oxygen is absent. Some examples are: Escherichia coli, Salmonella.