10. Dynamics of Microbial Growth

Organisms that require oxygen for metabolism are referred to as…

Organisms that are indifferent to the presence of oxygen are…

The enzyme(s) that deal with toxic oxygen-containing molecules is/are

_____________ microbes use oxygen in metabolism, while _____________ do not.

Microaerophiles that grow best with a high concentration of carbon dioxide in addition to a low level of oxygen are called _______.

a. aerotolerant

b. capnophiles

c. facultative anaerobes

d. fastidious

Label each of these thioglycolate tubes to indicate the oxygen requirements of the microbes growing in them.

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Which genus is the most common anaerobic human pathogen?

a. Bacteroides

b. Spirochetes

c. Chlamydia

d. Methanopyrus