Bacterial Identification Methods — MCQs

Best culture medium for isolating Vibrio cholerae?

A patient presents with urethral discharge. Gram stain shows intracellular gram-negative diplococci. What is the causative organism?

Which organism is considered the PRIMARY prototype for Ziehl-Neelsen (acid-fast) staining identification?

Best initial screening test to diagnose HIV infection

All of the following statements about cholera are true except -

A 32 year old laborer working at a construction site presented with fever and hemoptysis. The sputum sample collected for examination showed the following. The smear will be stained by which of the following sequences?

Best method to diagnose HIV in an infant?

A patient presented with meningitis, and the CSF sample shows Gram-negative diplococci on Gram staining and microscopy. Which of the following features/tests will be characteristic of the organism?

In nutrient agar the concentration of agar is

During the lag phase of the bacterial growth curve, what happens to the metabolic activity of the bacteria?