Which of the following statements about biogeochemical cycles is true?
A) not all living microbes require carbon
B) nitrogen fixing bacteria must be in association with legumes
C) Thiobacillus oxidizes hydrogen sulfide to sulfuric acid
D) Cyanobacteria are the primary symbiotic nitrogen fixer
Correct Answer:
Verified
Q1: Which would not be the habitat for
Q8: Nitrogen-fixing bacteria:
A)oxidize ammonia to nitrates or nitrites
B)oxidize
Q10: Nitrification is characterized by all of the
Q16: Nitrogenase is
A) oxygen sensitive
B) only produced by
Q20: Sulfate-reducing bacteria are characteristically
A) being strict anaerobes
B)
Q22: What results from the biological oxygen demand
Q23: The primary producers in the ocean are
A)
Q24: Which of the following symptoms is not
Q28: In testing for water purity,the presumptive test
Q39: The most predominant microbial group found in
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