In a maternity hospital a newborn should receive vaccination against tuberculosis. What vaccine should be chosen?

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Microbiology Chapter 1 Test Bank Questions

Question 1 of 5

In a maternity hospital a newborn should receive vaccination against tuberculosis. What vaccine should be chosen?

Correct Answer: A

Rationale: The correct answer is A: BCG vaccine. Step 1: BCG vaccine is specifically designed to protect against tuberculosis, making it the appropriate choice for newborns. Step 2: STI vaccine is for sexually transmitted infections, not tuberculosis. Step 3: EV vaccine is not a recognized vaccine. Step 4: DPT vaccine protects against diphtheria, pertussis, and tetanus, not tuberculosis. In summary, BCG vaccine is the correct choice as it targets tuberculosis specifically, while the other options are designed for different purposes.

Question 2 of 5

A bioterrorist has mailed an envelope with a powder that is suspected to contain anthrax causative agent. This envelope can remain dangerous for a long time, because anthrax causative agent:

Correct Answer: C

Rationale: Step 1: Anthrax causative agent is Bacillus anthracis, which forms spores. Step 2: Spores are highly resistant structures that can survive for a long time. Step 3: These spores can germinate into active bacteria when conditions are favorable. Step 4: The presence of spores in the powder makes it dangerous even long after being mailed. Summary: A: Incorrect - Anthrax does not form a protein capsule. B: Incorrect - Anthrax does not form a polysaccharide capsule. C: Correct - Anthrax forms spores that are highly resistant. D: Incorrect - Anthrax does not form flagella.

Question 3 of 5

Soil microflora often includes the representatives of pathogenic microorganisms. Specify the diseases, whose causative agents may say viable in the soil for a long time:

Correct Answer: B

Rationale: The correct answer is B: Tuberculosis and mycobacterioses. Mycobacterium tuberculosis, the causative agent of tuberculosis, and other mycobacteria can survive in the soil for extended periods. Here's the rationale: 1. Mycobacteria have a waxy cell wall that provides resistance to harsh environmental conditions. 2. The slow growth rate of mycobacteria allows them to persist in the soil for long periods. 3. Tuberculosis and mycobacterioses are known to be transmitted through environmental exposure, including soil. 4. Colibacillosis and cholera (Choice C) are caused by enteric bacteria that do not survive well in soil. 5. Leptospirosis and plague (Choice D) are bacterial diseases transmitted through animal hosts and are not known to be soil-borne.

Question 4 of 5

Patient with vomiting, dizziness, sensation of dubble vision, difficult swallowing was admitted to the hospital. Doctor suspects botulism. What diagnostic methods should be used for diagnosis approving?

Correct Answer: C

Rationale: The correct answer is C: Biological test, bacteriological. Botulism is caused by the toxin produced by Clostridium botulinum bacteria. To diagnose botulism, biological tests such as detecting the toxin in patient samples and bacteriological tests to identify the bacteria are crucial. These tests confirm the presence of the bacteria and its toxin, providing a definitive diagnosis. Choice A is incorrect as it does not specify any relevant diagnostic methods. Choice B is incorrect because mycological tests are not relevant for diagnosing botulism caused by a bacterial toxin. Choice D is incorrect as allergic tests and serological tests are not used for diagnosing botulism.

Question 5 of 5

A patient has been suffering from elevated temperature and attacks of typical cough for 10 days. Doctor administered inoculation of mucus from the patient's nasopharynx on the agar. What microorganism is presumed?

Correct Answer: A

Rationale: The correct answer is A: Pertussis bacillus. The symptoms described - elevated temperature and typical cough - are indicative of whooping cough, caused by Bordetella pertussis. By inoculating mucus from the nasopharynx on agar, the doctor is trying to isolate the causative agent, which is likely to be Pertussis bacillus. Summary of other choices: B: Pfeiffer's bacillus (Haemophilus influenzae): Unlikely as symptoms do not match. C: Listeria: Unlikely as it typically causes foodborne illness, not respiratory infections. D: Klebsiella: Unlikely as it is more commonly associated with pneumonia in immunocompromised individuals.

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