List of top Microbiology Questions

The antimicrobial activity of vancomycin is due to the _________.
Nonsense suppressor mutation is found in _________.
Phenolics act as disinfectant by _________.
Which of the following are present in Gram-negative bacteria?
Which one of the following mutagens convert DNA’s adenine to hypoxanthine?
The site of photosynthesis in cyanobacteria is ________.
Match Group-I (selection agent) and Group-II (gene) in CORRECT combination.
With reference to virulence (vir) region of nopaline type Ti plasmid of Agrobacterium tumefaciens, match Group-I (vir gene) and Group-II (coded protein) in CORRECT combination.
Which one of the following combinations is correct?
Which one of the following compounds is NOT a translation inhibitor?
Which one of the following statements about the DNA polymerase III of E. coli is NOT correct?
Oral efficacy of Sabin Polio Vaccine can be adequately explained by which of the following processes of absorption?
Which of the following conjugation reactions DOES NOT REQUIRE reaction with an activated conjugating agent?
Which of the following statements are true about Prions
A. Prion is a type of infectious protein 
B. Prions contain single stranded RNA 
C. Creutzfeldt‐Jakob disease (CJD) is not caused by Prion 
D. Prions are even more difficult to destroy than bacterial spores 
Choose the correct answer from the options given below:
Which of the following statements are true
A. Bacteria are categorized underneath the Kingdom Monera. 
B. Protista are unicellular and eukaryotic organisms. 
C. Yeasts and molds are under kingdom Fungi 
D. Multinucleated higher fungi are under Animalia 
Choose the correct answer from the options given below:
Match List I with List II
 List I-Classification of Bacteria List II-Example
AGram positive spherical shaped nonmotile bacteriaIClostridium tetani
BGram positive sporulating obligate anaerobic bacteriaIIBacillus anthracis
CGram positive rod shaped nonsporulating bacteriaIIIStreptococcus sp..
DGram positive sporulating rod shaped motile bacteriaIVCorynebacterium diphtheriae
E-VE.coli

Choose the correct answer from the options given below:

Boston Consulting Group (BCG) Matrix is used for
A patient with cervical lymphadenopathy and is found to be retropositive. A fungal culture depicts a velvety growth with red diffusible pigment on the underside, as shown below. Which is the most likely causative organism?
A woman with recurrent diarrhea is prescribed a broad-spectrum antibiotic. Which of the following is not true regarding Clostridium difficile infection?
A diabetic truck driver presents to you with cough and breathlessness. A diagnosis of pneumonia was confirmed, and histopathological examination revealed dichotomous branching, as shown below. What is the likely causative agent?
Mucor
Which of the following is considered to be the best for the detection of Clostridium difficile?
A newly joined teacher develops rice water stools. The causative agent acts on which of the following receptors?
A 12-year-old boy presents with right upper quadrant pain, calf pain, conjunctival suffusion, icterus, and fever. Examination shows tender hepatomegaly. What is the most likely diagnosis?
A female patient presents with complaints of thick white vaginal secretions. Which of the following can be used to identify the likely species of the causative agent?
A patient presents with itching in the axilla. On microscopic examination of the skin scrapings, a red pigment-producing fungus with pencil – shaped macroconidia is seen. Which of the following is the most likely organism?
A militant presents with rashes all over his body sparing the palms and soles. On examination, he was febrile and lice were noted. Which of the following is responsible for his condition?