After the First and Before the Second Chemical Step of RNA

question 33

Multiple Choice

After the first and before the second chemical step of RNA splicing, the intron of the pre-mRNA...

• A) is still covalently connected to the 3' exon and has an internal branch in the shape of a lariat.
• B) is still covalently connected to the 3' exon and is linear.
• C) is still covalently connected to the 5' exon and has an internal branch in the shape of a lariat.
• D) is still covalently connected to the 5' exon and is linear.
• E) is still covalently connected to both of its flanking exons and is linear.

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Definitions:

Mechanism

The detailed step-by-step description of how reactants are transformed into products in a chemical reaction, including intermediates and transition states.

Reaction

A chemical transformation whereby initial reactants undergo a change to produce final products, involving the rearrangement of atomic bonds.

Stereochemical Detail

Details about the positioning of atoms in a molecule and the impact of this positioning on the molecule's actions and reactions.

Organic Product

A compound or material derived from living organisms or produced by chemical synthesis designed to mimic natural products.