Riboswitches are folded RNAs that act as switches to turn protein synthesis on or off in response to ________.

Question

Quizplus · Accepted Answer

Riboswitches are folded RNAs that can sense changes in their environment, such as the presence or absence of certain molecules, and switch their conformation to either promote or inhibit gene expression. Therefore, the correct answer is A, changes in the environment. The other options (B, specific tRNAs; C, specific codes from the DNA; D, the presence or absence of ubiquitins) are not directly related to riboswitches.

Riboswitches Are Folded RNAs That Act as Switches to Turn