Which ONE of the Following Nuclear RNA Processing Events Is

question 64

Multiple Choice

Which ONE of the following nuclear RNA processing events is correct?

• A) Many RNA transcripts have a cap of 7-methyl-guanine added to the end of the RNA.
• B) The splice sites in precursors to mRNA are initially recognized by an enzyme that marks them by methylation.
• C) A poly G tail of up to about 200 guanine residues is added to the end of most pre-mRNA molecules.
• D) The 5'-end of many RNAs is capped using a 5'-5' pyrophosphate link.
• E) After synthesis of RNA on the DNA template, ribothymidine residues in the RNA are demethylated to uridine residues.

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Definitions:

Cash Flows

The total sum of money transfers both incoming and outgoing in a firm, majorly affecting its financial readiness.

Profitability Index (PI)

The present value of an investment’s future cash flows divided by its initial cost; also benefit/cost ratio.

Straight-Line Depreciation

A framework for spreading out the cost of a physical asset across its useful lifespan in identical yearly contributions.

Mutually Exclusive

Mutually exclusive is a statistical term describing two or more events that cannot occur simultaneously, often used in decision making or project selection scenarios.