Identify the microbe: A. GPC, Catalase (-), alpha hemolysis, P disk (R), Bile solubility (-), PYR (+), LAP (+) B. GPC, Catalase (-), gamma (non-) hemolysis, esculin (+), salt (+), PYR (+), tellurite (+) C. GPC, Catalase (-), gamma (non-) hemolysis, esculin (+), salt (+), PYR (+), tellurite (-) D. GPC, Catalase (-), alpha hemolysis, PYR (-), LAP (+), esculin (+), Vanc (S)
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- For which of the five hydrolysis tests (starch, casein, triglycerides, tryptophan, and urea) would a positive test result be expected for: a. the etiologic agent of acne, Propionibacterium acnes? Explain. b. the etiologic agent of gastric ulcers, Helicobacter pylori? Why would this activity be advantageous in this environment?Give typing answer with explanation and conclusion It has been determined that a patient is suffering from E.coligastro enteric infection. If you were the physician, would you prescribe (circle one) a. Tetracycline (TE), b. Trimethoprim (TMP), c. both, d. neither,Which of the following statements about listeriosis is false?(a) The causative agent, Listeria monocytogens, can befound in many types of food .(b) When pregnant women are infected with Listeria mono-cytogens, the bacteria may cause fetal damage or death.(c) Bacteriophages can be used to eliminate Listeria oncontaminated food.(d) Infection with Listeria monocytogens rarely results inmeningitis.(e) Listeria L-forms lack cell walls and are able to persistinside of macrophages after phagocytosis.
- 2. The patient has signs of pellagra, symmetrical dermatitis on the rear surface of the hand, neck, face, stomatitis. The patient complains of nausea, abdominal pain, diarrhea, lack of appetite, headaches, dizziness, depression. a) what vitamin deficiencies cause these symptoms? b) what coenzyme synthesis is reduced in this situation?43. The medical staff at an isolated public health clinic in rural Peru decide to administer oral therapy to patients during a cholera outbreak because there are not enough resources to give all the patients intravenous therapy. Which of the following should be included in the oral solution to enhance absorption of sodium in the gastrointestinal tract? A) Antibiotics B) Digestive enzymes C) Gastrointestinal motility inhibitors D) Glucose E) Magnesium F) UreaWhich statement among A-E is false concerning digestive system and gastrointestinal (GI) tract infections? A) O The more severe forms of gastroenteritis, like dysentery, produce abdominal cramps, fever, and blood. B) ORehydration and electrolyte replacement are typically the treatment for those with GI tract infections. C) O Invasive GI tract infections are caused by intracellular pathogens such as Salmonella and certain E coli. D) O Among protozoal pathogens, Giardia is a major cause of gastroenteritis. E) O Most GI tract infections are due to viruses. F) OA-E are all correct.
- What is the mechanism of the bile esculin test?A. Explain why it is essential to digest all wild-type pQE. 1.-CRYGD. B. How would you make 50 mL o 1% weight per volume (w/v) agarose solution?Which of the types of sputum would you most likely suspect to see in a ptient with lung cancer? A) Hemoptysis B) Pink and frothy C) Thick and green or brown D) Thin and yellow or pale gray
- 125. A 37-year-old man develops a recurrent episode of pseudomembranous colitis shortly after completing an initial course of oral metronidazole therapy. Which of the following best explains the recurrence? A) The bacterial strain can form spores that persist in the gastrointestinal tract B) Other gastrointestinal flora have degraded the metronidazole CC) The patient has an underlying gastrointestinal tract disorder OD) Systemic therapy is necessary to eradicate this infectionResults of Kirby Bauer test on E. Coli with penicilin , ampicilin, tetracycline, chloramphenicol disks showed zero zone of inhibition while there were zones around all these disks on S. aureus this should be interpreted as this drug is narrow spectrum a) True b) False(b) List TWO (2) types of common food hazards. Describe the properties of bacteria endotoxin based on the following component; (i) (ii) (iii) Stability Antigenicity Toxicity