Question
Consider the process of gene expression. Select the answer that places the steps of gene expression in the correct order.
Answers
GPT-4o mini
The process of gene expression can be summarized in the following steps, in their correct order:
1. **Transcription**: The DNA sequence of a gene is copied into messenger RNA (mRNA). This occurs in the nucleus of eukaryotic cells.
2. **RNA Processing**: The primary mRNA transcript undergoes processing, which includes the addition of a 5' cap, polyadenylation (adding a poly-A tail), and splicing (removal of introns).
3. **Translation**: The processed mRNA is transported to the ribosome, where it is translated into a protein. Transfer RNA (tRNA) molecules bring the appropriate amino acids to the ribosome based on the codon sequence of the mRNA.
4. **Post-Translational Modifications**: After translation, the protein may undergo further modifications, such as phosphorylation or glycosylation, to become fully functional.
In summary, the order is: **Transcription → RNA Processing → Translation → Post-Translational Modifications**.
1. **Transcription**: The DNA sequence of a gene is copied into messenger RNA (mRNA). This occurs in the nucleus of eukaryotic cells.
2. **RNA Processing**: The primary mRNA transcript undergoes processing, which includes the addition of a 5' cap, polyadenylation (adding a poly-A tail), and splicing (removal of introns).
3. **Translation**: The processed mRNA is transported to the ribosome, where it is translated into a protein. Transfer RNA (tRNA) molecules bring the appropriate amino acids to the ribosome based on the codon sequence of the mRNA.
4. **Post-Translational Modifications**: After translation, the protein may undergo further modifications, such as phosphorylation or glycosylation, to become fully functional.
In summary, the order is: **Transcription → RNA Processing → Translation → Post-Translational Modifications**.