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Chapter 4, Problem 10CT

A clinician obtains a specimen of urine from a patient suspected to have a bladder infection. From the specimen she cultures a Gram-negative, rod-shaped bacterium that ferments lactose in the presence of oxygen, utilizes citrate, and produces acetoin but not hydrogen sulfide. Using the key presented in Figure 4.25 identify the genus of the infective bacterium.

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Write a paragraph for when you once have Neisseria gonorrhoea bacteria in its pure form, what methods can you use to confirm the identity of this bacterium as N. gonorrhoeae? Mention what is the principle of those methods.
The process of collecting characteristics of your unknown bacterium can be helped by the use of a dichotomous key. A dichotomous key is a flowchart that can be used to identify an organism.   a) in your own words explain how to create and use a dichotomous key to identify unknown bacteria
Create a dichotomous key Use the following bacteria and place them at the top of your key: Escherichia coli Klebsiella pneumoniae Staphylococcus epidermidis Bacillus subtilis Use the following five criteria to create the couplets: Morphology Gram reaction Acid Fast Reaction Endospore Positive/Negative Capsule Positive/Negative

Chapter 4 Solutions

Microbiology with Diseases by Body System & Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System Package

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