Nitrification is characterized by all of the following EXCEPT:
A) carried out by autotrophic bacteria
B) supplies plants with a usable nitrogen source
C) produces ammonia
D) nitrogen is oxidized in both of the two steps
Correct Answer:
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Q4: The sulfur cycle is of special importance
Q5: The most usable form of sulfur by
Q6: Some microbes can survive drought by forming
Q7: Denitrification is:
A)a process by which nitrates are
Q8: Nitrogen-fixing bacteria:
A)oxidize ammonia to nitrates or nitrites
B)oxidize
Q10: Sulfur oxidation is carried out by _.
A)Thiobacillus
B)Desulfovibrio
C)Desulfomonas
D)Desulfotomaculum
Q11: Sulfate-reducing bacteria are characteristically _.
A)strict anaerobes
B)desulfovibrio
C)utilizing sulfate
Q12: The loss of water from pores of
Q13: The mechanism whereby Rhizobium and the legume
Q14: Which of the following microbes is not
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