Dr Thigpen Continued to Use His Original Scale to Measure

question 156

Multiple Choice

Dr. Thigpen continued to use his original scale to measure his patients' weights even though it no longer gave an accurate reading. Despite its inaccuracy, it did consistently give the same wrong weight each time a patient stepped on it. In this case, his scale lacks:

• A) sensitivity.
• B) reliability.
• C) validity.
• D) sensitivity, reliability, and validity.

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Definitions:

D-Glucose

A simple sugar that serves as an essential energy source for living organisms; it is a monosaccharide with the formula C6H12O6.

D-Arabinose

A naturally occurring pentose sugar, which is a component of many polysaccharides and glycoconjugates in plants and bacteria.

Open-Chain Form

Describes organic compounds that consist of a linear chain of atoms, as opposed to cyclic structures.

Asymmetric Centers

Carbon atoms bonded to four different groups, creating chirality and isomerism in molecules.