Processing of a Primary MRNA Transcript in a Eukaryotic Cell

question 49

Multiple Choice

Processing of a primary mRNA transcript in a eukaryotic cell does NOT normally involve:

• A) attachment of a long poly(A) sequence at the 3' end.
• B) conversion of normal bases to modified bases, such as inosine and pseudouridine.
• C) excision of intervening sequences (introns).
• D) joining of exons.
• E) methylation of one or more guanine nucleotides at the 5' end.

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Definitions:

Retrograde Amnesia

A form of amnesia in which an individual loses memories for events that occurred prior to a certain point, often due to brain injury or traumatic events.

Past Memories

Recollections of events or experiences from an individual's previous life.

Spreading Activation Model

A theory in cognitive science that explains how information is retrieved in the brain, suggesting that thoughts spread across the brain's network of neurons based on their associations.

Procedural Memory

A type of implicit memory that involves motor skills and behavioral habits.