Related Questions

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 of the following is not a method by which antibiotic functions?
One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
Which of the following is not the characteristic of a good antibiotic?
From which of the following species an antibiotic is generally not obtained?
Which of the following antibiotic is not involved in the inhibition of specific enzyme systems?
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 was the first antibiotic discovered by Alexander Fleming in 1928?
Which one of the following is an antibiotic drug?