Question 1:

What is the primary transcript of a gene called?

Explanation: B) Pre-mRNA is the primary transcript of a gene. It undergoes various processing steps, including splicing, to generate mature mRNA.

Question 2:

What is the process of removing introns and joining exons in pre-mRNA called?

Explanation: C) Splicing is the process of removing introns and joining exons in pre-mRNA. It is a crucial step in RNA processing to generate mature mRNA.

Question 3:

What are the sequences at the boundaries of introns called?

Explanation: C) Splice sites are the sequences at the boundaries of introns. They contain consensus sequences that are recognized by the splicing machinery during RNA processing.

Question 4:

Which molecules are involved in the splicing process?

Explanation: A) snRNPs (small nuclear ribonucleoproteins) are involved in the splicing process. They form the spliceosome, a complex responsible for the precise removal of introns and joining of exons.

Question 5:

What is the term for the modification of the 5' end of pre-mRNA?

Explanation: A) 5' capping is the term for the modification of the 5' end of pre-mRNA. It involves the addition of a methylated guanine nucleotide to provide stability and facilitate translation.