Asked by Karen Browne on Jun 19, 2024
Verified
Transcription factors control gene expression by ____.
A) initiating or repressing gene transcription only
B) regulating the rate of gene transcription only
C) promoting RNA degradation only
D) initiating or repressing gene transcription and regulating the rate of gene transcription
E) initiating or repressing gene transcription and promoting RNA degradation
Transcription Factors
Proteins that regulate the transcription of genes by binding to DNA and influencing RNA synthesis.
Gene Expression
The process by which information from a gene is used in the synthesis of a functional gene product, usually proteins, affecting the cell function.
Transcription
A process in which the DNA sequence in a gene is copied into mRNA.
- Acquire knowledge on the control of gene expression through alterations such as histone acetylation and the significance of transcription factors.
Verified Answer
MA
Menna AbotalebJun 23, 2024
Final Answer :
D
Explanation :
Transcription factors can either initiate or repress gene transcription and also regulate the rate of gene transcription. They can do so by binding to specific DNA sequences in the promoter or enhancer regions of the gene, which can activate or inhibit RNA polymerase from binding to the DNA template to initiate transcription. Therefore, option D is the best choice. Option E is incorrect because transcription factors do not promote RNA degradation.
Learning Objectives
- Acquire knowledge on the control of gene expression through alterations such as histone acetylation and the significance of transcription factors.