Which bacterial group forms over 90 per cent of the commensal flora of the intestine in an adult?
a. Facultative anaerobic coliforms
b. Gram-positive bacilli
c. Obligate aerobes
d. Obligate anaerobes
e. Obligate pathogens.
An organism that needs oxygen to grow is said to be an obligatory aerobe. These organisms use oxygen during cellular respiration to metabolise compounds like carbohydrates and lipids.
