The AraC Regulator Both Activates and Represses Transcription of the Genes

question 56

Essay

The AraC regulator both activates and represses transcription of the genes involved in arabinose catabolism. How is this system more advantageous to a cell than a simpler repressor system like that used on the lac operon?

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Definitions:

Volcanic Explosion

A volcanic explosion occurs when magma, gases, and rocks are violently expelled from a volcano, often with significant force and the potential for widespread impact.

Meteoroid Impact

The collision of a meteoroid (a small rocky or metallic body in outer space) with another celestial body, such as an asteroid, planet, or moon, causing a crater or larger-scale impacts.

Meteoroid Impact

Meteoroid impact refers to the collision of a meteoroid with another celestial body, such as Earth, resulting in the creation of impact craters and sometimes initiating geological changes.

Upheaval Dome

A geological structure caused by the upward movement of underground salt creating a dome-shaped feature on the Earth’s surface.