Question

A facultative anaerobic is ?

A. Only grow anaerobically
B. Only grow in the presence of O2
C. Ordinarily, an-anaerobe can grow with O2 D. Ordinarily, an-aerobe can grow in absence of O2​

Answer 1

Answer:

Facultative anaerobes can grow with or without oxygen because they can metabolize energy aerobically or anaerobically. They gather mostly at the top because aerobic respiration generates more ATP than fermentation. ... Unlike obligate anaerobes, they are not poisoned by oxygen.

Explanation:

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Answer 2

Answer:

1.A facultative anaerobic organism is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent.

2.Obligate anaerobes cannot grow in the presence of oxygen. They depend on fermentation and anaerobic respiration using a final electron acceptor other than oxygen. Facultative anaerobes show better growth in the presence of oxygen but will also grow without it.

3. the absence of oxygen are obligate, or strict, anaerobes. Some species, called facultative anaerobes, are able to grow either with or without free oxygen. Certain others, able to grow best in the presence of low amounts of oxygen, are called microaerophiles.

Explanation:

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