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Which one of the following does not belong with the others?
Select one:
A. Coxiella
B. Ehrlichia
C. Staphylococcus
D. Rickettsia
E. None of the above
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Fimbriae and pili differ in that pili
Select one:
A. Are composed of flagellin.
B. Are used for asexual reproduction.
C. Are used for attachment.
D. Are used to transfer DNA.
E. Are composed of pilin.
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Archaea differ from bacteria because archaea
Select one:
A. Lack nuclei.
B. Lack peptidoglycan.
C. Use organic compounds for food.
D. Reproduce by binary fission.
E. None of the above.
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Transformation is the transfer of DNA from a donor to a recipient cell
Select one:
A. By a bacteriophage.
B. By cell-to-cell contact.
C. By crossing over.
D. As naked DNA in solution.
E. By sexual reproduction.
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Large antibodies that agglutinate antigens are
Select one:
A. IgG.
B. IgM.
C. IgA.
D. IgD.
E. IgE.
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Which of the following provides taxonomic information that includes the others?
Select one:
A. Nucleic acid-base composition
B. Amino acid sequencing
C. Numerical taxonomy
D. Nucleic acid hybridization
E. Biochemical tests
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Which of the following best describes the pattern of microbial death?
Select one:
A. All of the cells in a culture are never killed.
B. The pattern varies depending on the species.
C. The pattern varies depending on the antimicrobial agent.
D. All the cells in a culture die at once.
E. The cells in a population die at a constant rate.