Module_06_Micro_Lab Academic Essay

Module_06_Micro_Lab Academic Essay

Module_06_Micro_Lab Academic Essay

Please answer all questions in a Q&A format.

Part I
A. What are the three elements required for the transmission of infectious disease?
B. What is meant by the term “vertical transmission”?
C. What is the difference between endogenous and exogenous infection?
D. List three factors that contribute the susceptibility of a potential host.
E. What is droplet transmission?
F. Define horizontal transmission and give examples of two types
G. What is a fomite?
H. List ten potential fomite sites?
I. How can you prevent the spread of pathogens via fomite transmission?
Part II
A. What is meant by the term “biochemical profile”?
B. What metabolic end product is tested for in the methyl red test?
C. What does an orange color indicate as a result for your methyl red test?
D. What metabolic end product is tested for in the Voges-Proskauer test?
E. Why do you need to be careful not to jostle the VP tube while you wait for the
results to show?
F. Which of your organisms, if any, fermented glucose?
G. Which of your organisms, if any, produced measurable acidic byproducts?
H. What is the cellular role of catalase?
I. Which of your organisms, if any, produced catalase? (two microscope slides E. coli and S. epidermidis.)
J. Which of your organisms, if any, produced acetoin? (two microscope slides E. coli and S. epidermidis.)

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