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1) What infections are caused by Staphylococcus aureus? Please give at least two examples. (Note: MRSA is not an infection - it is a designation of a drug-resistant strain of S. aureus.)
2) What is the difference between HA-MRSA and CA-MRSA?
3) What infections are caused by Staphylococcus epidermidis?
4) What precautions must be taken in healthcare settings to prevent infections by staphylococci?
5) Write out the chemical reaction that shows the interaction of the catalase enzyme with hydrogen peroxide and the products of this reaction. What two genera of microbes does this test distinguish between?
6) Which species of Staphylococcus did we find to be coagulase-positive? Why is this test important in diagnosing infections with Staphylococcus? How does the production of coagulase benefit a species of Staphylococcus in causing an infection?
7) When might someone be tested for nasal carriage of MRSA in the hospital?
Compute the free energy of transfer involved in the hypothetical transfer of electrons from complex 1 to complex four. The electron reduction potential of complex 1 in -0.32V.
Explain how radioactive isotopes are used in radiometric dating.
A man who has free earlobes marries a woman who has attached earlobes.What would be the expected phenotypes.
What is the main chemical compound found in sewer gas? Why the presence of Thiobacillus (Acidibacillus) species can cause sewer pipe (cement or iron) corrosion? Please explain from the metabolic perspective.
contrast the processes of bioaccumulation and biomagnification
Use knowledge of biological principles to ask relevant questions about the natural world make observations and discriminate in scientific and pseudoscientific explanations
the molecular weights (for the hind III fragments) beginning with the fragments nearest the origin are shown below fragment # , size in kilobase pairs (kb)
What is included in the genomic DNA of prokaryotes and how do these elements differ from eukaryotes?
Explain the polymerase chain reaction process. Use terms primer, template, DNA, nucleotides, and DNA polymerase.
Name two reasons why a gene tree might disagree with a species tree of the same taxa, even though both are evolutionarily correct.
Identify a toxicant that causes reproductive toxicity. the process by which this toxicant causes reproductive toxicity and the concentration of exposure;
Define the term ubiquitous and explain whether this term can be used appropriately to describe bacteria and archaea.
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