Question

In: Biology

Describe the role of each of the following molecules during gene expression. A. mRNA B. tRNA...

Describe the role of each of the following molecules during gene expression.

A. mRNA

B. tRNA

C. rRNA
D. Ribsomes

E. snRNPS/Spliceosome

Solutions

Expert Solution

A. Messenger RNA is responsible for carrying the codon. One codon encodes for one amino acid. It is the template during the process of translation and helps in the formation of amino acid sequence.

B. Transfer RNA is responsible for carrying the anti codon and amino acid. The interaction between codon and anticodon is responsible for the addition of the amino acid carried by the transfer RNA on the growing peptide chain.

C. Ribosomal RNA is responsible for binding to shine dalgarno sequence present on the Messenger RNA ribosomal RNA is present inside the ribosomes. Shine dalgarno sequence is located upstream of start codon and is the ribosomal binding site.

D. Ribosomes are molecules of ribosomal RNA and protein. They are called as protein factories because they are actively involved in the process of translation. They are responsible for keeping messenger RNA and transfer RNA in association with each other through out the process.

E. Spliceosome is a complex of small nuclear RNA and proteins which are associated with RNA to be spliced. This complex is responsible for the splicing of RNA by enzymatic mechanism.

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