A simple stain ________.
a. readily differentiates microbial groups
b. allows observation of bacterial motility
c. improves the contrast between the cell and the background, thus improving the visibility of bacterial cell shapes and structures
d. requires two steps: a staining step, then the addition of a mordant to decolorize the specimen
Answer: c. improves the contrast between the cell and the background, thus improving the visibility of bacterial cell shapes and structures
You might also like to view...
As fluid moves through a vessel, which factors determine the flow resistance? Select all correct choices
A. the viscosity of the fluid B. the length of the vessel C. the radius of the vessel D. the pressure exerted by the heart
A researcher is purifying monomeric immunoglobulins from patients' blood samples. Which immunoglobulin class would you expect to find the most of in these samples? Select all correct choices
A. IgE B. IgM C. IgG D. IgD E. IgA
How are serotonergic agonists a possible treatment for obesity?
What will be an ideal response?
Who played a decisive role in the refutation of theory of 'Spontaneous Generation'?
A. Ignatz Semmelweis B. Alexander Fleming C. Louis Pasteur D. Robert Koch E. Joseph Lister