Question

match the term with the appropriate description to test your understanding of the diversity of oxygen requirements among microorganisms. 1 obligate aerobe 2 facultative anaerobe 3 aerotolerant anaerobe 4 obligate anaerobe 5 microaerophile match each of the options above to the items below. describes an organism which requires oxygen for growth and has the enzymes to remove toxic by - products of oxygen metabolism describes an organism that can grow in the presence of oxygen and can detoxify it, but can also grow in the absence of oxygen describes an organism that cant grow at normal atmospheric oxygen concentrations, but does require a small amount of oxygen for growth describes an organism that is unable to use oxygen and lacks the enzymes to detoxify oxygen, thus requiring the absence of oxygen for growth describes an organism that does not use oxygen, but can grow to a limited extent in the presence of

Explanation:

1. Obligate aerobes need oxygen for growth and have enzymes to deal with oxygen - derived toxins.
2. Facultative anaerobes can grow with or without oxygen and can detoxify oxygen when present.
3. Microaerophiles require a small amount of oxygen for growth as normal atmospheric oxygen levels are inhibitory.
4. Obligate anaerobes cannot use oxygen and lack the enzymes to detoxify it, so they need an oxygen - free environment.
5. Aerotolerant anaerobes do not use oxygen but can grow to a limited extent in its presence.

Answer:

1. Obligate aerobe: Describes an organism which requires oxygen for growth and has the enzymes to remove toxic by - products of oxygen metabolism
2. Facultative anaerobe: Describes an organism that can grow in the presence of oxygen and can detoxify it, but can also grow in the absence of oxygen
3. Microaerophile: Describes an organism that can't grow at normal atmospheric oxygen concentrations, but does require a small amount of oxygen for growth
4. Obligate anaerobe: Describes an organism that is unable to use oxygen and lacks the enzymes to detoxify oxygen, thus requiring the absence of oxygen for growth
5. Aerotolerant anaerobe: Describes an organism that does not use oxygen, but can grow to a limited extent in the presence of