List of top Microbiology Questions

If the plasmid given below is digested with restriction enzymes HindIII and EcoRI, considering complete digestion, how many DNA fragments will be released?

The correct sequence of overall biochemical reaction which expresses the process of denitrification is _________.

Choose the correct match for structural components of bacteria to their function.

Which of the following methods are used for the identification of microorganisms?

Match the pathogen with the appropriate disease.

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?

Which of the following conjugation reactions DOES NOT REQUIRE reaction with an activated conjugating agent?

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?

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?