Table 203
the Following Data Were Obtained from a Broth Dilution

question 13

Multiple Choice

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

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

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Definitions:

Encoding

The initial learning of information; it is the process of converting sensory input into a form that is able to be processed and stored in the brain.

Factor

A condition or quality that brings about a result—in this case, “intelligent” behavior. A cluster of related items, such as those found on an intelligence or personality test.

Encoding

The initial learning of information; the process of transforming what we perceive, think, or feel into an enduring memory.

Practical Intelligence

The ability to solve everyday problems through the use of experience-based knowledge, rather than theoretical reasoning.