Microorganisms and Disease
Q. What is the main mode of transmission for the influenza virus?
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A.
Vector-borne
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B.
Airborne
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C.
Direct contact
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D.
Fecal-oral
Solution
The influenza virus is primarily transmitted through airborne droplets when an infected person coughs or sneezes.
Correct Answer: B — Airborne
Q. What is the primary laboratory test used to diagnose streptococcal pharyngitis?
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A.
Blood culture
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B.
Rapid antigen detection test
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C.
Urinalysis
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D.
Chest X-ray
Solution
The rapid antigen detection test is commonly used to diagnose streptococcal pharyngitis by detecting Group A Streptococcus.
Correct Answer: B — Rapid antigen detection test
Q. What is the primary vector for the transmission of malaria?
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A.
Aedes mosquito
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B.
Culex mosquito
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C.
Anopheles mosquito
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D.
Tsetse fly
Solution
The Anopheles mosquito is the primary vector responsible for transmitting the malaria parasite to humans.
Correct Answer: C — Anopheles mosquito
Q. What type of vaccine is the MMR vaccine?
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A.
Inactivated
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B.
Live attenuated
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C.
Subunit
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D.
Toxoid
Solution
The MMR vaccine is a live attenuated vaccine that protects against measles, mumps, and rubella.
Correct Answer: B — Live attenuated
Q. Which immune cells are primarily responsible for the adaptive immune response?
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A.
Neutrophils
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B.
Macrophages
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C.
B and T lymphocytes
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D.
Natural killer cells
Solution
B and T lymphocytes are the key players in the adaptive immune response, providing specific immunity against pathogens.
Correct Answer: C — B and T lymphocytes
Q. Which microorganism is primarily responsible for causing tuberculosis?
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A.
Streptococcus pneumoniae
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B.
Mycobacterium tuberculosis
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C.
Escherichia coli
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D.
Staphylococcus aureus
Solution
Mycobacterium tuberculosis is the causative agent of tuberculosis, a serious infectious disease that primarily affects the lungs.
Correct Answer: B — Mycobacterium tuberculosis
Q. Which of the following diseases is caused by a virus?
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A.
Tuberculosis
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B.
HIV/AIDS
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C.
Strep throat
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D.
Malaria
Solution
HIV/AIDS is caused by the human immunodeficiency virus (HIV), which attacks the immune system.
Correct Answer: B — HIV/AIDS
Q. Which of the following is a common symptom of bacterial meningitis?
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A.
Rash
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B.
Fever
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C.
Cough
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D.
Diarrhea
Solution
Fever is a common symptom of bacterial meningitis, along with headache and stiff neck.
Correct Answer: B — Fever
Q. Which pathogen is known to cause cholera?
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A.
Vibrio cholerae
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B.
Salmonella enterica
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C.
Clostridium botulinum
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D.
Listeria monocytogenes
Solution
Vibrio cholerae is the bacterium that causes cholera, leading to severe diarrhea and dehydration.
Correct Answer: A — Vibrio cholerae
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