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E.coli is a facultative anaerobe.

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What are the differences between a facultative anaerobe and a facultative aerobe in terms of their oxygen requirements for metabolism?

A facultative anaerobe can switch between using oxygen and not using oxygen for metabolism, while a facultative aerobe can only use oxygen for metabolism.


In what ways do facultative anaerobic bacteria differ from the other two types of bacteria in terms of their oxygen requirements?

Facultative anaerobic bacteria can survive with or without oxygen, while obligate aerobes require oxygen to survive and obligate anaerobes cannot survive in the presence of oxygen.


Can Ecoli respire?

Yes, E. coli can respire using oxygen as a terminal electron acceptor in aerobic conditions. However, it can also use alternative terminal electron acceptors like nitrate or fumarate in anaerobic conditions for respiration.


What is an example of a monera?

One example of a monera is the bacteria species Escherichia coli, commonly found in the human digestive system.


Where would you expect to see growth of a strict aerobe anaerobe microphile and facultative anaerobe in the fluid thioglycollate medium?

The sodium thioglycollate in the broth creates a redox potential in the tube, with higher levels of oxygen at the top of the tube, and a complete absence of oxygen at the bottom of the tube.Fluid thioglycollate broth also typically contains a redox potential indicator such resazurin, which produces a pink color in an oxidized environment. As with the BHI media, organisms will only be able to grow where their oxygen requirements are met, and will localize to the area(s) of their oxygen requirements in the fluid thioglycollate broth.Obligate aerobes will grown on or very close to the top (high oxygen). Obligate anaerobes will only grow on the bottom (no oxygen). Facultative anaerobes will grow throughout but more on top. Microaerophiles will be found in a band where only a small amount of oxygen is found. They would be close to but not on the top.