In This Figure, Are the Genes That Encode the Enzymes

question 9

Multiple Choice

In this figure, are the genes that encode the enzymes needed to make tryptophan on or off?

• A) The genes are on because the genes involved in tryptophan production are housekeeping genes
• B) The genes are on because the complex of tryptophan and repressor protein allow RNA polymerase to bind to the promoter.
• C) The genes are off because the complex of tryptophan and repressor protein prevent RNA polymerase from interacting with regulatory DNA.
• D) The genes are off because when tryptophan is plentiful in the environment, RNA polymerase is not made.

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Definitions:

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A type of options contract that gives the holder the right, but not the obligation, to buy a specified asset at a specified price on or before a specified date.

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The rate of return on an investment with no risk of financial loss, typically represented by the yield on government securities.

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