Molecular oxygen is both a blessing and a problem. It\'s a blessing because it a
ID: 879310 • Letter: M
Question
Molecular oxygen is both a blessing and a problem. It's a blessing because it allows aerobic catabolism (serving as the ultimate oxidizing agent for oxidation of NADH and FADH2 (or QH2)); and it's a problem because reactive (and damaging) oxygen species can be and are formed from oxygen in cells.
Which of the following is FALSE about reactive oxygen species?
A. Even though reactive oxygen species are formed in cells, they do not cause any problems and do not contribute to development of diseases.
B. peroxide (that is, O2(2-)) is a reactive oxygen species
C. superoxide (that is, O2(-)) is a reactive oxygen species
D. H2O is NOT a reactive oxygen species.
Explanation / Answer
The following statement is FALSE about reactive oxygen species:
A. Even though reactive oxygen species are formed in cells, they do not cause any problems and do not contribute to development of diseases.
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