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- Gram straining procedure. Indicate the following information A. Shape........ B. Stained color under microscope........ C. PG Wall thick, thin or both.....a. How was the specimen prepared for the microscopy technique applied? (for e.g. stained with H&E stain, Gram stain, unstained) b. What is the microscopy technique and magnification used to obtain this image? c. What is the basic principle of image formation using this microscopy technique? d. What can be observed and concluded from the image of the specimen? e. Are there any potential aberrations present in this specimen image? Describe these and how they may affect interpretation of the result.Which of following statements is TRUE about antiseptics and disinfectants? A. Disc diffusion works because the disc is soaked in bacteria and is the exposed to antimicrobial. B. You can tell the characteristics of the zone inhibition whether an organism is cidal or static in its effect. C.The shape of an object being cleaned may influence the effectiveness of germicides D. Gram + organisms are more resistant than Gram - organisms E. A large zone of inhibition shows bactericidal effect
- Which of the following is NOT a property of an antimicrobial agent? a. Must have a known concentration over a period of time required to eliminate a pathogen b. all choices are correct c. must be selectively toxic d. Must have a favorable chemotherapeutic indexa. Name four categories that blood agar fits.b. Name four differential reactions that TSIA shows.c. Observe figure 2 . Suggest what causes the difference in growthpattern between nonmotile and motile bacteria. d.Explain what a medium that is both selective and differential does,using figure1 .26) Factors that affect tissue preservation include a. Speed of fixation Choice of fixative b. Sample size Volume of fixative c. d. e. All of the above
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- d. using both hands placed under the base of the microscope Using the picture below, which beaker(s) contain a solution that is hypertonic to the bag? 0.2M 0.6M 0.2M 1.0M 0.2M 0.2M 1.0M 0.2M 0.2M 0.4M Select one: a. Beaker 3 b. Beakers 3 and 4 c. Beakers 1, 2, and 5 d. Beaker 2 and 4 e. Beaker 4 The scientifir method includor oll ofExplain the difference between Gram positive and Gram negative cell walls. Describe the procedure for performing a Gram stain. What is the procedure? How does each component work? (ie. What does the mordant do?) How is the Gram stain used clinically to help identify the cause of an infection?The MIC is the of a drug that is required to inhibit growthof a microbe.a. largest concentration b. standard dose c. smallest concentration d. lowest dilution