In the Lactose Operon of E

question 61

Multiple Choice

In the lactose operon of E. coli, the lacO^c mutation:

• A)never produces the structural genes.
• B)produces the structural genes only in the presence of the inducer.
• C)produces the structural genes only in the absence of the inducer.
• D)produces the structural genes all the time.

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Definitions:

Phenytoin (Dilantin)

An anticonvulsant medication used to manage and prevent certain types of seizures.

Phenobarbital

A type of barbiturate medication used to manage and treat seizures, as well as to help with sedation.

Vitamin D

A fat-soluble vitamin essential for bone health and calcium absorption, also plays a role in immune function.

Folic Acid

A B-vitamin essential for the production and maintenance of new cells, particularly important during periods of rapid growth such as pregnancy to prevent neural tube defects.