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Doctors Medicines MCQs Q&A

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If a plasmid is having two antibiotic resistant genes, say ampicillin resistant and chloramphenicol resistant. If the plasmid grows in ampicillin containing medium but not in chloramphenicol, what can be concluded?
Which of the following is a bactericidal antibiotic?
Ampicillin antibiotic is used in which of the following diseases?
Once a plasmid has incorporated specific genes, such as the gene coding for the antibiotic ampicillin, into its genome, the plasmid may be cloned by
Researchers from i-sense have developed a new way of detecting antibiotic-resistant bacteria that can detect antibiotic resistance in approximately how many minutes?
Consider the following statements: 1. Antibiotic resistance is one of the biggest threats to global health, food security, and development today. 2. Antibiotic resistance occurs naturally. 3. The misuse of antibiotics in humans and animals is making antibiotics less effective. Which of the following statements given above is/are correct?
A certain antibiotic X is effective only against a few types of harmful microbes and cells. X is a _______ antibiotic.
A bacterial culture (200 μL containing 1.8 × 109 cells) was treated with an antibiotic Z (50 μg per mL) for 4 h at 37°C. After this treatment, the culture was divided into two equal aliquots.
Set A: 100 μL was plated on Luria agar.
Set B: 100 μL was centrifuged, the cell pellet washed and plated on Luria agar.
After incubating these two plates for 24 h at 37°C, Set A plate showed no colonies, whereas the Set B plate showed 0.9 × 109 cells. This experiment showed that the antibiotic Z is
Which is used to purify water by bactericidal method?
Which of the following serves as bactericidal agent?