HELP BIOLOGY ITS URGENT

Question

The following is a pre-mRNA sequence. (Recall the 3 things that need to be done to pre-mRNA before it can leave the nucleus.) Please edit and process this sequence to make it a mature mRNA transcript which is ready to leave the nucleus and travel to the ribosome to translated. ?

 

GREEN = EXON

RED = intron

               

A

U

G

G

C

U

A

A

C

C

G

A

A

C

U

G

C

C

C

A

U

Answer 1

Hi Karim,

I am going to give you clues to answer the question, as a guide. I usually tell my students that introns stay in the nucleus and exons leave. Exons will stay together and exit the nucleus. There are 2 additional things that need to be done to the pre-mRNA molecule, so it is ready to go and can leave the nucleus. If you review your textbook, this is called post-transcriptional modifications.

pre-mRNA in a sense needs a makeover; t is like someone putting on makeup, styling their hair before leaving the house. The house is the nucleus, and the outside world is the cytoplasm. pre-mRNA needs to get a makeover also.

If I were to reword the question for clarity it would look like this: Below you see a sequence of pre-mRNA. 1) Please remove what is no longer needed in the pre-mRNA, 2) add the two things are needed to have a mature RNA (mRNA, also known as messenger RNA) be allowed to leave the nucleus.

I hope this helps you if you still needed the help.

Marcella