Question

Be prepared to identify an organism as a strict aerobe, facultative anaerobe or obligate anaerobe when grown on brewer plates under different conditions.

A) Based on its resistance to antibiotics.
B) Based on its motility.
C) Based on its growth patterns.
D) Based on its metabolism.

Answer 1

Strict aerobes require oxygen for growth, while facultative anaerobes can grow with or without oxygen. Obligate anaerobes cannot tolerate oxygen and rely on other methods for energy production. Aerotolerant anaerobes do not use oxygen for metabolism, but are not harmed by its presence.

Step-by-step explanation:

Strict aerobes are organisms that require oxygen for growth and typically rely on aerobic respiration. Facultative anaerobes can grow with or without oxygen, and can use either aerobic respiration or fermentation as their energy source. Obligate anaerobes cannot tolerate oxygen and rely on fermentation or anaerobic respiration for growth. Aerotolerant anaerobes do not use oxygen for metabolism, but are not harmed by its presence. Based on antibiotic resistance, motility, growth patterns, and metabolism, we can determine whether an organism is a strict aerobe, facultative anaerobe, or obligate anaerobe.