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Which of these disinfectants is least effective against E. coli?
a. Chlorine
b. o-phenylphenol
c. quat
d. hexachlorophene
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- From a contaminated intravenous catheter you isolate Gram-positive cocci, beta-hemolytic, and catalase positive. MSA results below (grown aerobically): Which pathogen from the list below have you isolated? O Streptococcus pyogenes_ O Staphylococcus aureus_ Staphylococcus epidermidis_ Streptococcus pneumoniae_What structures are found on agar plates when the bacteriophage T4 has penetrated Escherichia col? O colonies color change no color change plaquesWhy is Salmonella typhi a gram negative bacilli? Explain.
- The peptidoglycan layer of Gram-positive bacteria is exposed to the extracellular environment. True FalseGas Gangrene: You are working in the Surgery Unit and are helping a paitent with "gas gangrene". Samples of tissues and fluid delivered to lab for culture and identification. Microbes could not grow aerobically; growth occurred anaerobically only Blood agar after anaerobic incubation (below), note zones of clearing around colonnies:Below are the results of our disc diffusion study using antiseptics and disinfectants. Use the results to answer the following questions: Lab Lab Lysol 1:10 diluted Disinfectant Isopropanol soap Tincture of iodine bleach ISP T of I BL SO DIS LYS Diameter in mm of zone of inhibition E.coli 40 mm 20 mm 10 mm 15 60 mm Bacillus 20 70 mm 50 mm 35 mm 15 mm cereus Co
- Medically Significant Bacteria: Causative Agent and Disease Profile ITEM IMPORTANCE OF BACTERIA PROFILE BACTERIAL PROFILE I MICROORGANISM/CAUSATIVE AGENT A GRAM REACTION B OXYGEN REQUIREMENT C SIZE D SHAPE E HABITAT F DISCOVERY G MICROSCOPIC IMAGE II DISEASE PROFILE A DISEASE/S B SYMPTOMS OF THE DISEASE C INCUBATION PERIOD D MODE OF TRANSMISSION E DIAGNOSIS F TREATMENT G PREVENTION H NO OF DAYS BEING SYMPTOMATIC I IMAGE OF INFECTED PATIENT GENERAL INSTRUCTIONS: Using the template provided above, fill out the information for a bacteria. YOU CAN CHOOSE ANY BACTERIA from 1-60 BELOW: List of medically significant bacteria Aerobic Gram (+) Cocci S. epidermidis S. saprophyticus Streptococcus pyogenes Streptococcus agalactiae Enterococcus(E. faecalis, E.…Match pathogen to common site of hospital-acquired infection. Make matches so you use each letter one time. 33. forms endospores, causes serious diarrhea Resistant Staphylococcus Aureus A. Methicillin- 34. gram-negative opportunist, burn infections, pneumonia difficile 35. typical large intestine flora, causes urinary tract infections 36. broadly antibiotic-resistant, causes infections anywhere in body aeruginosa B. Clostridium C. Escherichia coli D. Pseudomonas 37. If a disease can use in a room where air does not freely flow out of the room. transmission, a patient with that disease will need to be A. droplet B. contact C. airborne D. fecal-oral 38. Handwashing will not prevent transmission of a pathogen. A. direct contact B. fomite C. vector D. fecal-oral 39- A 27-year old unmarried female patient presents with genital warts. A-Which one of the following viruses is the most likely cause? 1- Herpes simplex virus 2- Epstein-Barr virus 3- Hanta virus 4-HPV S-HIV B- Which one of the…ITEM MSM MICROBIAL PROFILE MICROORGANISM/CAUS ATIVE AGENT 1 D SHAPE E HABITAT F DISCOVERY G MICROSCOPIC IMAGE || | DISEASE PROFILE DISEASE/S A B SYMPTOMS OF THE DISEASE C INCUBATION PERIOD D MODE OF TRANSMISSION DIAGNOSIS TREATMENT PREVENTION NO OF DAYS BEING SYMPTOMATIC I IMAGE OF INFECTED PATIENT דן EFGH G PROFILE Haemophilus ducreyi
- A Gram stain result from cerebrospinal fluid (CSF) indicates Gram positive cocci (G+C) in pairs. Which of the following would be the presumptive identification: O Haemophilus influenzae O None of the answers apply O Streptococcus pneumoniae O Streptococcus pyogenes O Neisseria meningitidis O E. coli O Staphylococcus aureusPropionibacterium acnes is a normal member of the skin microbiome that benefits the body by lowering the skin's pH- an antimicrobial effect. However, P. acnes is also the leading cause of acne. Explain mechanistically how can a bacterium be normal and beneficial but also be pathogenic?Complete the table with the clinically important bacteria and the disease that they inflict. Fill in the other details describing the symptoms, the mode of transmission, the diagnosis and the treatment of the disease. Choose two cocci, two bacilli and two spirochetes. Causative Agent Disease Symptoms Mode of Transmission Diagnosis Treatment