The Poly(A)tail of an MRNA

question 29

Multiple Choice

The poly(A) tail of an mRNA

• A)helps transport the pre-mRNA to the cytoplasm.
• B)keeps the coding sequences from being degraded.
• C)is added without an RNA template.
• D)is important in initiation of translation.
• E)is removed from an mRNA after its maturation.

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Definitions:

Skewed

A distribution that is not symmetrical, indicating that the data tends to lean towards the left (negatively skewed) or right (positively skewed) of the average.

Histogram

A graphical representation of the distribution of numerical data, usually showing frequency of data intervals.

Median

The middle value in a sorted list of numbers, effectively dividing the dataset into two halves.

Skewed

Describes a distribution of data that is not symmetrical, where one tail is longer or fatter than the other.