Laboratory Experiments in Microbiology (11th Edition)
11th Edition
ISBN: 9780321994936
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 46, Problem 2Q
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Laboratory Experiments in Microbiology (11th Edition)
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- Is the gram stain significant to microorganisms other than bacteria? explainarrow_forwardDescribe how specimen collection is performed using aseptic techniques to isolate medically significant bacteria and identify these clinically important bacterial species, Escherichia coli, Streptococcus pneumonia, Haemophilus influenzae and Streptococcus pyogenes by using different staining techniques and biochemical tests. Evaluate the effectiveness of different biochemical techniques used to identify different bacterial species.arrow_forwardWhy is heat-fixed procedure in bacterial smear preparation not ideal for capsular staining?arrow_forward
- Since the dyes for the Gram stain are not specific to the bacteria theystain, what mistakes in the procedure could cause an incorrect result?arrow_forwardif an unknown bacterial slide appears to be in fading color and the shape of the specimen seems to be diffused. what troubleshooting of the focusing is needed in order to see the bacteria clearly?arrow_forwardIn gram staining, could colors other than red be used as a counterstain?arrow_forward
- What is the best streaking technique in a culture media? Explainarrow_forwardWhat stain technique is used here? What is the primary stain, mordant, decolorizing agent, and counter stain of this technique? Do we heat fix in here? Describe the organism with purple color. Describe the organism with pinkish red color.arrow_forwardIf zn stain is positive from a sputum sample, what would be your pre-treatment of choice to isolate the pathogen from the sample and why?arrow_forward
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