Multiple Choice
What does the process of post-translational modification refer to?
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15. Gene Expression
Post-Translational Modification
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Which of the following processes is an example of post-translational modification?
A
RNA splicing
B
Transcription
C
DNA replication
D
Phosphorylation
Verified step by step guidance1
Understand the concept of post-translational modification: It refers to the chemical changes that a protein undergoes after it has been synthesized during translation. These modifications can affect the protein's function, activity, stability, and localization.
Identify the processes listed in the problem: RNA splicing, transcription, DNA replication, and phosphorylation.
Recognize that RNA splicing is a process that occurs during RNA processing, not after translation. It involves the removal of introns from a pre-mRNA transcript.
Understand that transcription is the process of synthesizing RNA from a DNA template, and DNA replication is the process of copying DNA. Both occur before translation.
Phosphorylation is a common post-translational modification where a phosphate group is added to a protein, often altering its function or activity. This occurs after the protein has been synthesized, making it an example of post-translational modification.
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