Question

1. Which of the following is NOT true?

A) P. fluorescens involved with spoilage of refrigerated milk, meat because they grow at 4 degrees C and degrade lipids and proteins

B) P. fluorescens is found in fish and is involved in it ability to luminesce

C) L. pneumohilia is found in air conditioners and hot tubs

D) Salmonella is a cause of typhoid fever

2. Which of the following human diseases is linked to a class of Epsilonproteobacteria?

A) Guillian-Barre Syndrome

B) Stomach Ulcers

C) Diarrhea

D) B&C only

E) All of these

3. Which genus uses the enzymes ammonia monooxygenase and hydroxylamine oxidoreductase in converting ammonia to nitrite?

A) Lactobacillus

B) Nitrococcus

C) Nitrosomonas

D) All of these

E) None of these

4. The genus Bdellovibrio:

A) form long filiments called Trichomes

B) Prey on Gram negative bacteria by becomming an intracellular parasite

C) Use reduced sulfur compounds as a source of energy

D) Are responsible for causing Diarrhea in humans

5. Coxiella burnetii is responsible for ___?

A) Q-fever

B) Rocky mountain spotted fever

C) Lyme disease

D) Typhus

Answer 1

Answer .1 = b

All other statements are true

Pseudomonas fluorescens is pathogenic for fushes causing seticemia but not involved in fluorescens.

Answer 2= C

epsilonproteonbacterium includes two bacteria camplyobacter causing diarrhea and helicobacter pylori ausing stomach ulcers

Answer 3= nitrosomonasanswer 4 = B

NITROGEN CYCLE Ammonia Decomposition and oxidation of cellulos by Cellulomonas Bacteria and chitin eating Actinomycetes as well as lignin eating fungus. Bacterial oxidation by nitrosomonas bacteria NH3+ NITRIFICATION Dead Nitrite ions organic matter NO2- NITROGEN FIXATION Bacterial oxidation by nitrobacter Bacterial fixation of air by Rhizobium, Aztobacter, Clostridium, Azpririlum species death of the anamal waste death of the plants material Nitrate ions Animal proteins NO3- consumption of plants by animals Consumption of organic fertilizer by plants Plant proteins NITROGEN UPTAKE

Bdellovibrio is an gram negative aerobic bacteria which can parasitze othee gram negative bacteria and feed on their biopolymers.

Answer 5= coxiella burnetti is responsible for QFever which is mainly affects domestic animals characterized by abrupt onsent fever malaise, muscle pain, joint pain , diarrhea etc.