Question

31. True/False plus correction (6pts) Mark the following statements sentence in bold. If false, circle the bold part of the sentence that is falses s rce the bold part of the centence that is false & correct it in the space If true, just mark it true. (No points will be awarded if you write False, but do not com e following statements true or false. Focus on the part of the Alternative splicing occurs in different cells due to the presence of different spicms factors, which are proteins that recognize splicing enhancer sequences in the pre-mRNA cells due to the presence of different splicing recognition In the cytosol, mRNA forms a circular structure when the Cap Binding Complex (CBC) binds Poly A Binding Proteins (PABPs). Changing the length of the Poly-A tail affects mRNA stability, but does not affect the primary structure of the peptide that is translated from the mRNA.

Answer 1

1.Alternative splicing occurs in different cells due to the presence of different splicing recognition factors ,which are proteins that recognize splicing enhancer sequences in the pre m-RNA.-TRUE.

Most exons contain exonic splicing enhancers (ESEs) that stimulate splicing at the adjacent splice sites by different splicing recognition factors.

2. In the cytosol,mRNA forms a circular structure when the Cap Binding Complex(CBC) binds Poly A binding proteins.-FALSE.

In the nucleus,mRNA forms a circular structure when the Cap Binding Complex(CBC) binds Poly A binding proteins.

3.Changing the length of the PolyA tail affects mRNA stability ,but does not affect the primary structure of the peptide that translated from the RNA.-TRUE