Q. The gram-negative organisms is

View solution

Q. Catalase production is negative in which of the following?

View solution

Q. Which of the following is a substitute for crystal violet used in gram-staining procedure?

View solution

Q. Which of the following inference(s) indicate(s) the ability of an organism to utilize citrate as a sole source of carbon in Simmon's citrate medium?

View solution

Q. The organisms that can be acid-fast stained is

View solution

Q. The primary stain of Gram's method is

View solution

Q. At what concentration of sulphuric acid, Nocardia resists decolourization?

View solution

Q. Which of the following is commonly used as Gram's decolouriser?

View solution

Q. Production of acetoin can be detected by which of the following tests?

View solution

Q. The production of sufficient acid by fermentation of glucose leads to decrease in pH such that pH of the medium falls below 4.5. Which of the following test can detect it?

View solution

Q. What is the colour of gram -postive bacteria on a gram staining?

View solution

Q. What is the colour of gram-negative bacteria on a gram staining?

View solution

Q. Which of the following is a primary stain for acid fast staining of mycobacteria?

View solution

Q. The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to

View solution

Q. Which of the following shows a positive urease test?

View solution

Q. Which of the following(s) is/ are oxidase-positive bacteria?

View solution

Q. What is the order of reagents used in the Gram stain?

View solution

Q. Gram staining was developed accidentally in 1884 by

View solution

Q. Which of the following organisms can be demonstrated with silver impregnation method?

View solution

Q. Which of the following(s) show(s) positive results for phenylalanine deaminase test?

View solution