Blog

Mimivirus has a size of 390 nm in length, and 220 nm in diameter.  Can this virus be resolved with a compound light (bright field) microscope?

In Griffin’s experiment of transformation, he concluded that protein was the biological molecule that must be “transferring” information to the nonvirulent strain of Streptococcus.

Match the microscopes on the left with their function on the right

Small internal cell structures that are measured in nanometers (nm) are best visualized using a _________.

In the Gram-staining procedure, the mordant is __________.

Koch’s postulates would work to identify the following organisms as a cause of disease EXCEPT?

Which of the following individuals is credited for definitively disproving the theory of spontaneous generation using broth in swan-neck flask?

Which of these numeric aperture and wave length combinations would give the best resolution?

If you wish to use immunofluorescence stain to differentiate between E. coli and Staphylococcus aureus, which of the following components of the fluorescent microscopy technique would be DIFFERENT between the two sample preparations so that you will be able to differentiate one organism from the other? 

You have isolated a bacterium that you believe to be the causative agent of a new disease in mice. How would you test the second Koch’s postulates?