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- 1. The selective ingredient in mannitol salt agar is ______________, which selects for the growth of Staphylococcus organisms.1. Why is Plasmodium species isolated usually in blood? 2. What are the characteristics of a good quality malarial smear?1. Describe at least two experiments that would allow you to determine that an unknown organism is a Staphylococcus. State the methods and the results you would expect for a Staphylococcus organism.
- If a cut or scrape becomes infected, Staphylococcus aureus is probably the culprit (right). These bacteria often live on the skin and they can cause a problem if they get into a wound. Most staph infections can be cured with the antibiotic methicillin. Unfortunately, methicillin-resistant S. aureus (MRSA) is on the rise. Previously, antibiotic-resistant staph infections occurred mainly in hospitals and nursing homes. Now they are breaking out in schools and health clubs. The bacteria are transmitted by contact with an infected person or something that person has touched, as by sharing towels and razors. The gene conferring methicillin resistance is on a plasmid. Explain why a gene that is on a plasmid can spread more quickly than one on the bacterial chromosome.1.) Why is boiling water not a recommended sterilization method? 2.) List examples of transfusion-transmitted infections. How are these infections prevented?1. Illustrate in a diagram the identification scheme from gram-positive cocci.2. Discuss the principle involved in the biochemical tests in identifying species of staphylococci.3. Illustrate in a diagram the identification scheme for Streptococci.4. Discuss the principle involved in the biochemical tests in identifying species of Streptococci.
- 1. While working with Mannitol Salt Agar you notice the growth of staphylococci however other microorganisms are growing as well. How would you interpret this?1. what tests (i.e staining and/or microscopic test etc) can be used on the disease causing organism below that can help draw a flow chart or ditochomy key? Cryptococcal Meningitis , Endocarditis, Anaplasmosis, West Nile Arboviral Encephalitis, Impetigo & Erysipelas, Lyme Disease, Gas gangrene, Pork Tapeworm infestation, Tuberculosis, Bacterial UTI1. Describe the three different type of hemolysis that are observed on blood agar.2. What is a selective medium?3. What is a differential medium?4. Which media can be used to isolate E. coli samples from contaminated lettuce?5. Which two media would be used to identify a sample taken from a patient with suspected gonorrhea?6. Would you be able to grow a sample obtained from a patient's wound (suspected to be infected with MRSA) on EMB? Explain.7. What is the color or TSI for Salmonella?8. What is a fastidious organism?
- (2) WHAT IS THE ISOLATION PROCESS OF THE FOLLOWING (i) Salmonella, (ii) E.coli, (iii) klebsiella (iv) Proteus, (v) vibrio cholera, (vi) streptococcus, (vii) staphylococcus, (viii) Niserria (3) WHAT IS THE MODE OF IDENTIFICATION FOR THE FOLLOWING (i) Salmonella, (ii) E.coli, (iii) klebsiella (iv) Proteus, (v) vibrio cholera, (vi) streptococcus, (vii) staphylococcus, (viii) NiserriaA patient with a diagnosis of "Staphylococcal pneumonia" was admitted to the clinic. For successful etiological treatment we should select an effective antibiotic. For this purpose, was recommended to determine the antibioticogram of the pathogen. 1. What method can be used to determine antibiotic sensitivity? 2. The principle of the method and accounting for results.By what means do Staphylococcus aureus carriers spreadStaphylococci?(a) Via their hands after touching the nostrils(b) By nasal secretions(c) Fomites(d) All of the above