An organism is discovered that thrives in both the presence and absence of oxygen. Interestingly, as oxygen is removed from the organism's environment, the rate of sugar consumption increases while the growth rate decreases. What do these observations suggest about the likely identity of this organism? (A) It is an unremarkable eukaryotic organism. (B) It is a photosynthetic organism. (C) It is an obligate anaerobic organism. (D) It is a facultative anaerobic organism.



Answer :

An organism that that thrives in both the presence and absence of oxygen but its rate of sugar consumption increases while the growth rate decreases as oxygen is removed (D) It is a facultative anaerobic organism.

Oxygen is the gas required by all the aerobic organisms for respiration. It forms nearly 21% of the part of Earth's atmosphere. As an element, it is the most abundant in Earth's crust. The gas is colorless, odorless and tasteless.

Facultative anaerobes are those that undergo cellular respiration normally in the presence of oxygen. But they are capable of switching to fermentation when the oxygen in unavailable.

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