A Similarity Between Regulation of the Lac Operon in Bacteria

question 44

Multiple Choice

A similarity between regulation of the lac operon in bacteria and the regulation of galactose utilization in yeast is that both pathways

• A)transcribe all the genes necessary as one polycistronic mRNA.
• B)use feedback inhibition to stop making their sugars.
• C)use a modified version of their sugars as inducers.
• D)are subject to catabolite repression.
• E)C and D only

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Definitions:

Ectothermic Animals

Organisms that rely on external sources of heat to regulate their body temperature.

Vasoconstriction

The narrowing of blood vessels, which increases blood pressure by reducing the volume of space for blood flow.

Vasodilation

The dilation of blood vessels, which decreases blood pressure.

Motivation

Motivation is the psychological driving force that initiates and guides behavior, often driven by the desire to fulfill a need or achieve a goal.