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Throughout the previous modules you have gained information on the methods used to distinguish different bacteria from one another. This activity serves to reinforce the concepts associated with biochemical tests, help you learn the metabolic strategies associated with individual or groups of bacteria, and strengthen your understanding of basic morphological differences. For this assignment, you are to choose one (1) of the groups, either A) oral/respiratory tract pathogens and commensals, or B) urogenital pathogens and commensals or C) gastrointestinal tract pathogens and commensals, and develop a key based on differential staining and culturing, morphology and the suite of biochemical tests available to identify bacteria.

A) Typical oral/respiratory tract pathogens and commensals -

Streptococcus pneumonia Yersina pestis
Haemophilus influenza Streptococcus viridans
Staphylococcus aureus Bacillus antracis
Klebsiella pneumonia Bordetella pertussis
Streptococcus pyogenes Chlamydia pneumonia
Psuedomonas aeruginosa Mycobacterium tuberculosis
Mycoplasma pneumoniae

B) Typical urogenital pathogens and commensals

Neisseria gonorrhoeae Streoticiccus agalactiae
Staphylococcus saprophyticus Clostridium perfringens
S. pyogenes Haemophilus vaginalis
Ureaplasma urealyticum Treponema pallidum
Chlamydia trachomatis Serratia marcescens
Trichomonas vaginalis
C) Typical gastrointestinal pathogens and commensals -

Campylobaacter jejuni Enterobacter faecalis
Salmonella typhimurin Shigella sonnei
Escherichia coli Bacillus cereus
Clostridium perfringens Vibrio cholerae
C. dificile Helicobacter pylori
Alcaligenes faecalis Listeria monocytogenes

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