Question

A student claims that transcription factors, regulators, and activators only allow eukaryotic cells to turn on genes when they are needed, but do not help to shut down genes when the genes are not needed. Evaluate the accuracy of the student's statement. The statement is incorrect because transcription factors, regulators, and activators help shut down gene expression by their absence. The statement is incorrect because activators allow eukaryotic cells to turn on genes when they are needed, and transcription factors and regulators function to shut down genes when the genes are not needed. The statement is incorrect because some transcription factors, regulators, and activators can shut down some genes by binding to sites on DNA. The statement is accurate as written.

Answer 1

The statement is incorrect because transcription factors, regulators, and activators help shut down gene expression by their absence.

Step-by-step explanation:

The essential proteins which regulate and control the process of transcription of genes( from DNA to RNA) during gene expression for protein synthesis are called transcription factors. They ensure accuracy and specificity in gene copying by mediating that right genes are copied in each cell.

Therefore they determine if a gene is needed to be turn on or off.since they regulate the transcription processes. A gene that is transcribed is likely to be expressed to make protein that is turned on, while a gene that is no transcribed will not be expressed.

Therefore in their absence transcription will not occur, and therefore gene expression will be shut down.

Answer 2

The statement is incorrect because transcription factors, regulators, and activators help shut down gene expression by their absence.