Control of the Lac Operon and Lactose Utilization in Bacteria

question 58

Multiple Choice

Control of the lac operon and lactose utilization in bacteria is (check all that apply)

• A)not induced in the presence of both glucose and lactose.
• B)only induced when there is glucose but not lactose.
• C)is a negative control,mediated by a repressor.
• D)controlled by the expression of three downstream genes.
• E)preferentially utilizing lactose as a carbon source.

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Definitions:

Bicyclic Compounds

Organic compounds that contain two fused or connected rings in their molecular structure.

Diene

Organic compounds containing two double bonds, which may participate in a variety of chemical reactions, especially polymerization.

Dienophile

A chemical compound that acts as an electron-deficient partner in Diels-Alder reactions, typically containing double or triple bonds.

Major Organic Product

The leading compound created at the maximum yield in reactions involving organic substances.