Talaro's Foundations in Microbiology - Chapter 17 - 11th Edition Questrions and Correct Answers
The ___ is the genetic composition of an organism.
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genotype
___ morphology encompasses phenotypic methods used to identify bacteria such as the Gram stain, presence of capsules, and presence of flagella.
microscopic
which represent advantages of genotypic methods for diagnosing infections?
- speed of obtaining results
- identifies organisms that are not easily cultured in the lab
Diagnostic testing by immunologic methods uses which of the following reactions to determine the identity of microbes in a patient's serum?
antigen-antibody
The sterile swab transport tube allows for ___, ___ and maintaining the specimen in its original condition.
sampling, transporting
Which of the following terms is used to describe the appearance of an organism?
phenotype
identify any of the following as a microscopic morphology-based assay.
- presence of endospores
- gram staining
Which of the following is the primary advantage of genotypic methods over phenotypic methods?
culturing of the microorganism is not always necessary
which of the following body fluids are considered sterile?
- cerebrospinal fluid
- interstitial fluid
- blood
identify any of the following as immunologic-based assay.
- presence of antibodies
- presence of antigen
When sampling with a sterile swab transport tube, it is imperative that normal ___ from adjacent regions do not contaminate the sample.
microbiota
After proper collection, samples should be treated in which way?
refrigerated
The primary methods used to diagnose infections are ___, ___, and ___ analysis.
- phenotypic
- immunologic
- genotypic
T or F? Direct antigen tests require the use of an electron microscope to observe a positive reaction.
False
Which of the following body fluids is not considered sterile?
- urine
- mucus in trachea
Nutrient media designed to favor the growth of certain bacteria over others are which type of media?
selective
Many specimen transport devices contain non-nutritive maintenance media, a buffering system, and a(n) ____ environment to prevent destruction of oxygen-sensitive bacteria.
anaerobic
Which techniques are favored as a screening method for large numbers of people?
serologic
direct antigen testing identifies microbes in a specimen by using known ___ to visibly react with antigens on the microbe.
antibodies
using differential media, the presence of a particular enzyme in an organism is often visualized as a change in which of the following?
color of the medium
Which of the following body fluids are considered sterile?
- cerebrospinal fluid
- interstitial fluid
- blood [Show Less]