Multiple Choice
Which of the following molecules in eukaryotic cells play a direct role in regulating gene expression?
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16. Regulation of Expression
Introduction to Regulation of Gene Expression
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Post-translational control refers to:
A
Regulation of gene expression after transcription.
B
Regulation of gene expression after translation.
C
Control of epigenetic activation.
D
Period between transcription and translation.
Verified step by step guidance1
Understand the concept of post-translational control: It refers to the regulation of gene expression after the process of translation, which is the synthesis of proteins from mRNA.
Differentiate between transcription and translation: Transcription is the process of copying a segment of DNA into RNA, while translation is the process where ribosomes synthesize proteins using the mRNA transcript.
Identify the role of post-translational modifications: These modifications can include phosphorylation, methylation, acetylation, and ubiquitination, which alter protein function, activity, stability, or localization.
Recognize the importance of post-translational control: It allows cells to rapidly respond to changes in the environment by modifying existing proteins rather than synthesizing new ones from scratch.
Clarify the incorrect options: Post-translational control does not involve regulation after transcription (which is post-transcriptional control), nor does it involve epigenetic activation or the period between transcription and translation.
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