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200 Practice Questions: Extensive question set covering all microbiology topics.
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Key Concepts: Focused review of essential microbiology principles.
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Expert Tips: Proven strategies to enhance your study and exam performance.
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Updated for 2025: Aligned with the latest microbiology curriculum standards.
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Success-Oriented: Structured to help you achieve top grades in your final exam.
Preview
1. Characteristics of the Orthomyxoviruses include all of the following, except:
A) Enveloped
B) Include paramyxoviruses
C) Hemagglutinin spikes
D) RNA genome
E) Neuraminidase spikes
Correct Answer: B) Include paramyxoviruses
Rationale: Orthomyxoviruses are distinct from paramyxoviruses. While both are RNA
viruses, paramyxoviruses belong to a different family, and thus, the statement “include
paramyxoviruses” is incorrect for Orthomyxoviruses.
2. The enzyme associated with the influenza virus that hydrolyzes the protective
mucous coating of the respiratory tract is:
A) Catalase
B) Reverse transcriptase
C) Hyaluronidase
D) Neuraminidase
E) Kinase
Correct Answer: D) Neuraminidase
Rationale: Neuraminidase is an enzyme found in influenza viruses that helps in the
hydrolysis of sialic acid residues, thus breaking down the protective mucus layer in the
respiratory tract, facilitating the spread of the virus.
3. Inhalation of respiratory secretions is involved in the transmission of the
following, except:
A) Influenza
B) Rubella
C) Dengue fever
D) Mumps
E) SARS
Correct Answer: C) Dengue fever
Rationale: Dengue fever is primarily transmitted through the bite of infected Aedes
mosquitoes, not through respiratory secretions. In contrast, influenza, rubella, mumps,
and SARS are transmitted via inhalation of respiratory droplets.
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