The preferential use of glucose over other available carbon substrates for growth is mechanistically explained by catabolite repression.

Question

Quizplus · Accepted Answer

Catabolite repression is a regulatory mechanism in which the presence of a preferred carbon source, such as glucose, inhibits the uptake and metabolism of other carbon sources. This results in the cell utilizing glucose first before any other carbon sources, which is known as the preferential use of glucose.

The Preferential Use of Glucose Over Other Available Carbon Substrates