Which of the Following Statements Is Correct Concerning Ubiquitin

question 3

Multiple Choice

Which of the following statements is correct concerning ubiquitin?

• A) Ubiquitin occurs only in liver cells.
• B) Covalent coupling of ubiquitin to a protein can mark that protein for degradation.
• C) It is involved in transfer of mannose-rich oligosaccharides to proteins.
• D) It is a transcription factor for RNA polymerase II.
• E) it is an snRNP necessary for splicing of mRNA precursors.

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Definitions:

Raw Score

An original, unmodified score obtained in a measurement or test.

Normal Curve

Another term for a normal distribution, characterized by its bell-shaped curve where most observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.

Mean

The arithmetic average of a set of values, found by dividing the sum of all values by the number of values.

Median

The midpoint in a set of values, such that 50% of the cases in a distribution fall below the median and 50% fall above it.