Question

Using your text and websites such as those listed above, research 5 bacteria: Streptococcus, Escherichia, Arthrospira (fr. Spirulina), Anabaena, Lactobacilus, and 1 more of your choice _____________. Identify the shape, mode of nutrition, locations found, role in the ecosystem, and disease and host of these 5 bacteria and 1 more of your choice (6 total). Most bacteria are harmless (or beneficial), though a few are pathogenic bacteria. You may find websites from the Center for Disease Control (CDC) and National Institute of Health (NIH) helpful for the pathogenic organisms. You are not turning in the data you collect; your data will help prepare you for your laboratory quiz.

Answer 1

Details	Anabaena	Escherichia	Streptococcus	Arthrospira (fr. Spirulina	Lactobacilus	Listeria
shape	Filamentous cyanobacteria	Rod shaped	Coccus, Grape like clusture	filamentous	Rod shaped	rod
mode of nutrition	Autotrophs-Nitrogen fixation. Photosynthesis.	heterotrophs	heterotroph	Autotroph-photosynthesis	Heterotroph fermentation	heterotroph
Locations found	Rice paddy fields	Gut flora of worm blooded animals	Human mouth,skin, intestine, respiratory tract	Alkaline brackish, Saline water	Vaginal microbiota, milk	Soil and water
role in the ecosystem	-fixes nitrogen under nitrogen limiting condition -protects plant from grazing pressure	Present in normal microbial flora of animals	Part of the commensal human microbiota	Produces carbohydrate and oxygen by photosynthesis	Shows mutualistic relationship with body	Harmful for humans
disease	Water related disease due to cyanobacterial toxin	Urinary tract infection Diarrhoea dysentry	Pink eye Pharyngitis Meningitis	It is beneficial for us. has antimicrobial effect and can be taken as dietary supplement	Beneficial. Lowers vaginal pH, Produces antimicrobial substances.	listeriosis
host	Free living organism	Worm blooded animals	Human, cattle,swine			human