Table 203 the Following Data Were Obtained from a Broth Dilution

question 10

Multiple Choice

Table 20.3 The following data were obtained from a broth dilution test:
$$\begin{array}{|l|}\begin{array} { c | c } \hline \text { Concentration of Antibiotic }\\ \text { X } & \text { Growth } \\\hline 2.0 \mu \mathrm { g } / \mathrm { ml } & - \\\hline 1.0 \mu \mathrm { m } / \mathrm { ml } & - \\\hline 0.5 \mu \mathrm { g } / \mathrm { ml } & - \\\hline 0.25 \mu \mathrm { gl } / \mathrm { ml } & + \\\hline 0.125 \mu \mathrm { g } / \mathrm { ml } & + \\\hline 0 & + \\\hline\end{array}\end{array}$$
Bacteria from the 0.25 μg/ml tube were transferred to new growth media
Containing antibiotic X with the following results:
$$\begin{array}{|l|}\begin{array} { c | c } \hline \text { Concentration of Antibiotic }\\ \text { X } & \text { Growth } \\\hline 2.0 \mu \mathrm { g } / \mathrm { ml } & - \\\hline 1.0 \mu \mathrm { m } / \mathrm { ml } & + \\\hline 0.5 \mu \mathrm { g } / \mathrm { ml } & + \\\hline 0.25 \mu \mathrm { gl } / \mathrm { ml } & + \\\hline\end{array}\end{array}$$
The data in Table 20.3 show that these bacteria

• A)are pathogenic.
• B)developed resistance to antibiotics.
• C)were killed by 0.125 μg/ml of antibiotic X.
• D)were killed by 0.5 μg/ml of antibiotic X.
• E)were resistant to 1.0 μg/ml at the start of the experiment.

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Definitions:

Expiration

The process of breathing out; also called exhalation.

Pulmonary Function Test

A group of tests conducted to evaluate how well the lungs are working in terms of their ability to take in and release air and how efficiently they transfer oxygen into the blood.

Patient Preparation

The process of readying a patient for a medical procedure or treatment, including instructions or actions needed to ensure safety and effectiveness.

Slightly

To a small degree; not considerably or extensively.