Sigma (A)factors Can Regulate the Initiation of Transcription

question 32

Multiple Choice

Sigma (a) factors can regulate the initiation of transcription. Which of the following is NOT an example of a regulation?

• A)Bacteriophages may code for specific a factors that bind the core RNA polymerase and result in recognition of viral promoters.
• B)There are many a sigma factors associated with eukaryotic organisms.
• C)Some a factors recognize genes necessary for nitrogen utilization.
• D)Some a factors recognize promoters for genes whose products are necessary when the organism is under stress, such as heat shock.

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