Nucleotide Sequences That Identify the Location of Transcription Start Sites

question 64

Multiple Choice

Nucleotide sequences that identify the location of transcription start sites and regulate the level of transcription are called:

• A) sigma factors.
• B) Pribnow boxes.
• C) TATA boxes.
• D) promoters.
• E) enhancers.

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Definitions:

Stepwise Mechanism

A reaction mechanism in which the overall reaction occurs through a sequence of individual steps, each with its own transition state and intermediates.

Electrophilic Nitration Reaction

A chemical reaction that introduces a nitro group into an organic compound through electrophilic substitution, often involving benzene or other aromatic rings.

Friedel-Crafts Alkylation

A method in organic chemistry for adding alkyl groups to an aromatic ring, using a catalyst like aluminum chloride.

(CHS1U1B13S1U1B0)S1U1B13S1U1B0CCl

This appears to be a non-standard or incorrect representation of a chemical structure and does not correspond to a recognizable chemical or common notation. NO.