The modification that does not occur to the mRNA before it leaves the nucleus is Promoter binding.

Here's why:

1. Exon Splicing: This is a process where the non-coding regions (introns) are removed from the pre-mRNA and the coding regions (exons) are joined together.

2. End Capping: This is the addition of a 5' cap to the pre-mRNA. This cap is a modified guanine nucleotide and it helps to protect the mRNA from degradation and assists in the export of the mRNA from the nucleus.

3. Promoter Binding: This is not a modification of mRNA. Instead, it is a part of the process of transcription initiation. The promoter is a DNA sequence that the transcription machinery, including RNA polymerase and a number of other proteins, binds to.

4. Intron Removal: This is similar to exon splicing. The introns, or non-coding regions, are removed from the pre-mRNA to produce the final mRNA molecule.

So, the correct answer is Promoter binding.

Question

The modification that does not occur to the mRNA before it leaves the nucleus is Promoter binding.

Here's why:

1. Exon Splicing: This is a process where the non-coding regions (introns) are removed from the pre-mRNA and the coding regions (exons) are joined together.

2. End Capping: This is the addition of a 5' cap to the pre-mRNA. This cap is a modified guanine nucleotide and it helps to protect the mRNA from degradation and assists in the export of the mRNA from the nucleus.

3. Promoter Binding: This is not a modification of mRNA. Instead, it is a part of the process of transcription initiation. The promoter is a DNA sequence that the transcription machinery, including RNA polymerase and a number of other proteins, binds to.

4. Intron Removal: This is similar to exon splicing. The introns, or non-coding regions, are removed from the pre-mRNA to produce the final mRNA molecule.

So, the correct answer is Promoter binding.

Knowee AI · Accepted Answer

The modification that does not occur to the mRNA before it leaves the nucleus is Promoter binding.

Here's why:

1. Exon Splicing: This is a process where the non-coding regions (introns) are removed from the pre-mRNA and the coding regions (exons) are joined together.

2. End Capping: This is the addition of a 5' cap to the pre-mRNA. This cap is a modified guanine nucleotide and it helps to protect the mRNA from degradation and assists in the export of the mRNA from the nucleus.

3. Promoter Binding: This is not a modification of mRNA. Instead, it is a part of the process of transcription initiation. The promoter is a DNA sequence that the transcription machinery, including RNA polymerase and a number of other proteins, binds to.

4. Intron Removal: This is similar to exon splicing. The introns, or non-coding regions, are removed from the pre-mRNA to produce the final mRNA molecule.

So, the correct answer is Promoter binding.

Which of the following is not a modification to the mRNA before leaving the nucleus?Exon splicingEnd cappingPromoter bindingIntron removal

Question

Solution

Similar Questions

Upgrade your grade with Knowee