Microbiology Answers

List three physical agents and three chemical agents used for microbial control.

Differentiate gram positive and gram negative bacteria as it pertains to cell wall structure and gram stain result.

List six characteristics which differentiate viruses from cellular lifeforms and list ten virally caused diseases.

Specify which lifeforms are Procaryoti and which are Eucaryotic then list six differenes in cellular structure between Procaryotes and Euroryotes.

List and differentiate the seven major Microbial classes.

Name a unique substance that is present in HIV virus, which is not present in human body? It can be an enzyme, protein etc anything.

Why isn't the routine bacteriological examination of water directed towards isolation and identification of specific pathogens?

Explain the importance of microbial interactions in the ecosystem.

What would happen if you were to repeat the experiment but, this time, you were to carry out the lysozyme treatment in a buffered solution containing a high concentration of a low-molecular weight solute, such as sugar or salt? Would you still get the same results (clearing/cloudiness) for the Gram-positive bacterium?

And

What would happen if you were to repeat the experiment but, this time, you were to carry out the lysozyme treatment in a buffered solution containing a high concentration of a low-molecular weight solute, such as sugar or salt? Would you still get the same results (clearing/cloudiness) for the Gram-negative bacterium?

I have 2 test tubes labeled "Strep E" and "Strep E Buffer"

The "Strep E" test tube contains "Staphylococcus Epidermidis and Lysozyme"

The "Strep E Buffer" test tube contains "Staphylococcus Epidermidis and a Buffercontrol"

I understand how Lysozyme breaks down peptidoglycan in the "Strep E" test tube

So my question is

Why is the "Strep E Buffer" test tube that contains no Lysozyme useful in this experiment?

How can it be used as a comparison?

Thanks