List of top Public Health Questions on Microbiology

The typical sequence for bacterial growth curve is:

Which enzyme is primarily responsible for relieving supercoiling during DNA replication?

Which type of microscopy uses a special condenser to direct light onto the specimen from oblique angles only?

Which type of microscopy uses a special condenser to direct light onto the specimen from oblique angles only?

Which of the following diluents should be used when an RBC count is requested?

Which of the following conditions can result in the excretion of small amounts of occult blood in the faeces?
(A) Hemorrhoids
(B) Bleeding gums
(C) Peptic ulcers
(D) Intake of iron supplements

When viewing a focused specimen in the microscope, the user sees a speck in the field of view. The speck remains in view when the objective is changed and when the specimen is moved. The speck is most likely located on the:
(A) Condenser
(B) Eyepiece
(C) Objective
(D) Specimen coverslip

Which type of microscopy is able to produces three-dimensional images and performs optical sectioning?
(A) Brightfield
(B) Interference contrast
(C) Phase-contrast
(D) Polarizing

The principle of fluorescence microscopy is based on:
1. A substance that causes the rotation of polarised light
2. Differences in the optical light path being converted to intensity differences
3. Differences in refractive index being converted into variations in light intensity
4. The absorption of light and its subsequent emission at a longer wavelength