Which statement about nitrogen metabolism is not true?
A) Certain prokaryotes reduce atmospheric N2 to ammonia.
B) Some nitrifiers are soil bacteria.
C) Denitrifiers are obligate anaerobes.
D) Nitrifiers obtain energy by oxidizing ammonia and nitrite.
E) Without nitrifiers, terrestrial organisms would lack anitrogen supply.
Correct Answer:
Verified
Q7: Most prokaryotes
A) are agents of disease.
B) lack
Q8: The domains of life are
A) Bacteria, Archaea,
Q9: The closest monophyletic group(s) to the domain
Q10: Genetic evidence suggests that viruses
A) are most
Q11: Archaea is the closest sister group to
Q13: Which of the following is found in
Q14: All photosynthetic bacteria
A) use chlorophyll a as
Q15: The common ancestry (monophyly) of the three
Q16: Gram-negative bacteria
A) appear blue to purple following
Q17: The common ancestor of all three domains
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