Which of the following convert atmospheric nitrogen to ammonium?
A) nitrifying bacteria
B) nitrogen-fixing bacteria
C) mycorrhizae
D) ammonifying bacteria
Answer: B) nitrogen-fixing bacteria
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Which of the following processes are typically associated with the long-term carbon cycle? Select all that apply
A. respiration B. plate tectonics C. photosynthesis D. volcanic eruptions
The chains of an antibody molecule are bonded to one another by
A. disulfide bonds. B. hydrogen bonds. C. ionic bonds. D. oxygen bonds.
Phylogeny is most analogous to a ____
a. family genealogy b. burst of new computer technology c. telescopic view of the early universe d. traffic light e. roller coaster
Suppose that the human insulin protein that was produced by the bacteria was much shorter than it should be. Upon further investigation, it was found that the DNA of the human insulin gene had a mutation while in the bacterial cells. What type of
mutation could not result in these observations? A) nucleotide insertion B) silent mutation C) nucleotide deletion D) nonsense mutation