Which of These Controls the Expression of the Lac Operon

question 9

Multiple Choice

Which of these controls the expression of the lac operon?

• A)An activator protein only.
• B)An attenuation mechanism.
• C)A repressor protein only.
• D)Both repression and activation mechanisms.
• E)Both repression and attenuation mechanisms.

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Definitions:

Brightness Constancy

The perception that the brightness of an object remains the same under varying conditions of illumination.

Auditory Neurons

Nerve cells that are responsible for processing and transmitting sound information from the ear to the brain.

Temporal Lobe

A region of the cerebral cortex responsible for processing auditory information and encoding memory.

Parietal Lobe

The parietal lobe is a region of the brain associated with processing sensory information related to touch, pressure, temperature, and pain.