How Is Sequential Gene Expression Controlled in Bacterial Viruses Like

question 8

Multiple Choice

How is sequential gene expression controlled in bacterial viruses like E.coli phages T7 and T4 and Bacillus subtilis phage SP01?

• A) Modifying the DNA topology
• B) Sequential binding of a series of repressor molecules
• C) Modifying the specificity of RNA polymerase for different promoter sequences
• D) Sequential binding of inducer molecules to the repressor
• E) None of these are correct.

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Definitions:

Cholesterol

A waxy, fat-like substance found in all cells of the body, necessary for the formation of cell membranes, certain hormones, and vitamin D.

Steroids

Organic compounds with four rings arranged in a specific molecular configuration, important in biology, chemistry, and medicine.

Nucleic Acid Derivatives

Molecules derived from nucleic acids, such as nucleotides, which play essential roles in genetic information storage and energy transfer.

Polypeptides

Chains of amino acids linked by peptide bonds, serving as building blocks for proteins.