Introduction to Regulation of Gene Expression quiz Flashcards

Positive gene regulation stimulates gene expression by turning on the gene, resulting in the gene's final product being made at a higher rate.

Negative gene regulation prevents gene expression by turning off the gene, leading to the gene's final product being made at a lower rate.

Positive and negative gene regulation are compared to a light switch, where turning on the switch resembles positive regulation and turning off the switch resembles negative regulation.

Prokaryotes must rapidly change their metabolic pathways to survive in environments with constantly changing nutrient availability.

Prokaryotes commonly use operons to control the expression of their genes.

An operon is a cluster of genes under the control of a single promoter, allowing coordinated regulation of gene expression in prokaryotes.

Positive gene regulation resembles a light switch being turned on, which stimulates gene expression by turning the gene on.

Negative gene regulation resembles a light switch being turned off, which prevents gene expression by turning the gene off.

The primary difference is that positive gene regulation turns on genes to increase expression, while negative gene regulation turns off genes to decrease expression.

Gene regulation is important for prokaryotes to adapt to changing environmental conditions and efficiently manage their metabolic pathways.

Operons play a crucial role in coordinating the regulation of multiple genes in response to environmental changes.

Prokaryotes respond to changes in nutrient availability by rapidly altering their gene expression through mechanisms like operons.

The outcome is an increased production of the gene's final product.

The outcome is a decreased production of the gene's final product.