The vaccine for the disease anthrax was developed between the period:
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The microscope used to study microbial motility and determining the shape of line cells is:
A. Scanning microscope
B. Phase contrast microscope
C. Transmission microscope
D. Dark field microscope
Answer: B
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Which microscope is used to reveal the internal structures of larger eukaryotic microorganisms?
A. Phase contrast microscope
B. Bright field microscope
C. florescence microscope
D. Dark field microscope
Answer: A
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A system of surgery designed to prevent microorganisms from entering wounds was developed by:
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Alcoholic fermentation was found to be catalyzed by:
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Which of the following is not a step in virus reproduction?
A. entry into host
B. synthesis of viral nucleic acid and proteins
C. attachment
D. disassembly of the viron
Answer: D
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Which of the following is not an advantage of direct count method of measuring bacterial growth?
A. it is easy and quick
B. the microbial population must be fairly large for accuracy
C. it is inexpensive
D. it gives information about the size and morphology of microorganisms
Answer: B
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Which of the following methods of measuring microbial growth depends on the fact that microbial cells scatter light that strikes them?
A. most probable number technique
B. spectrophotometry
C. viable counting methods
D. determination of microbial dry weight
Answer: B
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Which of the following techniques is useful for measuring growth of filamentous fungi?
A. viable counting methods
B. spectrophotometry
C. most probable number technique
D. determination of microbial dry weight
Answer: D
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The formation of diphtheria tetanus antitoxins was induced by:
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