Grossmont-Cuyamaca Community College District Bacterial Unknowns Worksheet

Below is a list of all of the possible bacterial unknowns you could be given in lab. Prepare a table that lists the organism, the phylum, class, order, and family to which it belongs, and the medical significance, including the mode of transmission (air, water, food, close contact, sexual contact), and the body system affected (ie, skin, nervous system, cardiovascular/lymphatic, respiratory, digestive, urinary, reproductive). To find the phylum, class, order, and family according to the Bergey’s manual, use this link: https://onlinelibrary.wiley.com/pb-assets/assets/9781118960608/Taxonomic_Outline_October_2017-1507044705000.pdf (Links to an external site.)

Info regarding medical significance can be found in the Tortora text.

Citrobacter freundii

Klebsiella pneumoniae

Enterobacter aerogenes

Escherichia coli

Edwardsiella tarda

Providencia stuartii

Proteus mirabilis

Pseudomonas aeruginosa

Pseudomonas fluorescens

Serratia marcescens

Salmonella enteritidis

Shigella flexneri

Bacillus cereus

Bacillus megaterium

Bacillus subtilis

Clostridium sporogenes

Corynebacterium xerosis

Micrococcus luteus

Micrococcus roseus

Staphylococcus saprophyticus

Mycobacterium phlei

Mycobacterium smegmatis

Staphylococcus aureus

Staphylococcus epidermidis

Enterococcus faecalis

12. What are some common features of parasitic helminth worms? Describe the three stages that

are found in all parasitic helminth life cycles. Give an example of a helminth disease discussed in class.

13. List 3 mechanisms by which helminths can enter human hosts (transmission).

14. What is another name for the helminths in the phylum Platyhelminthes? What are the 2 major groups of worms in this phylum? What is another name for the helminths in the phylum Nematoda?

15. What structures form the basis for the classification of fungi? What are the four groups into which

fungi are currently classified?

16. Compare and contrast superficial, systemic and subcutaneous mycoses. Give an example of each.

17. Distinguish between a prion and a viroid.