Based on our understanding of the early stages of life, ________ is/are thought to be one of the earliest forms of metabolic regulation that evolved.
A) attenuation
B) feedback inhibition
C) riboswitches
D) transcription factors

Question

Quizplus · Accepted Answer

Riboswitches are known to regulate gene expression at the level of transcription or translation by binding to specific small molecules, such as metabolites or cofactors. They are hypothesized to have evolved early in life as a way for organisms to respond to changes in their environment and metabolic state, making them one of the earliest forms of metabolic regulation. Options A, B, and D are all forms of regulatory mechanisms that are more complex and likely evolved later in the process of evolution.

Based on Our Understanding of the Early Stages of Life