Which of the following microscopes has the best resolution? Microscope A: wavelength = 400 nm, NA = 4 Microscope B: wavelength = 200 nm, NA = 1

Charles Deslondes

Which of the following has the correct order of the Gram stain reagents?

A bacterial sample is stained using the simple stain method. Following staining, round cells arranged in chains are seen under the microscope. Which of the following morphologies and arrangements match this description?

Molten agar is used in the 

Calculate the total magnification when viewing a sample using a 60X objective lens if the oculars have a 10X magnification. 

All of the following is true concerning immersion oil except

This technique can be used to enumerate the number of cells in a sample but only detects the cells capable of reproducing to form a colony.

Trypticase soy agar (TSA) is made with enzymatic digest of casein and soybean meal along with other ingredients. This makes TSA an example of a

A pure culture contains a single