BIOMOLECULES AND ENZYMES

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BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The ____ that remain are ____ back together by the ____ to form a smaller mRNA molecule that is then translated.
A
exons, stitched, splicesomes
B
introns, stitched, splicesomes
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The spliceosome precisely removes introns from pre-mRNA to generate mature messages (mRNA), a process referred to as pre-mRNA splicing. The spliceosome is essential for cell function and defective pre-mRNA splicing causes disease [4–10].

Detailed explanation-2: -Ribosomes and spliceosomes are ribonucleoprotein nanomachines that catalyze translation of mRNA to synthesize proteins and splicing of introns from pre-mRNAs, respectively.

Detailed explanation-3: -To generate mature mRNAs, the introns must be snipped out and the exons stitched back together by the molecular tailor of the cell: the spliceosome.

Detailed explanation-4: -The pieces of the RNA that are not chopped out are called exons. The exons are pasted together by the spliceosome to make the final, mature mRNA that is shipped out of the nucleus.

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