How Does Breakdown of Glucose Inhibit Transcription of the Lac

question 58

Multiple Choice

How does breakdown of glucose inhibit transcription of the lac operon?

• A) by strengthening the binding of the repressor to the operator
• B) by weakening the binding of the repressor to the operator
• C) by inhibiting RNA polymerase from opening the strands of DNA to initiate transcription
• D) by reducing the levels of intracellular cAMP

---

Definitions:

Sella Turcica

A saddle-shaped depression in the sphenoid bone at the base of the human skull, housing the pituitary gland.

Sphenoid

A butterfly-shaped bone at the base of the skull that forms part of the floor and sides of the skull as well as the orbits around the eyes.

Occipital

Relating to the occiput, the back part of the skull or head.

Ethmoid

The ethmoid bone is a spongy, cube-shaped bone that forms part of the nasal cavity and the orbits of the eyes, contributing to the structure of the skull.