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11 May, 06:45

During splicing, which molecular component of the spliceosome catalyzes the excision reaction? A) proteinB) DNAC) RNAD) lipidE) sugar

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  1. 11 May, 08:58
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    C) RNA

    Explanation:

    Spliceosome is a complex machinery that performs splicing (removal of the introns from the primary mRNA transcript) and alternative splicing (re-combination of different exons which increases genetic diversity). Spliceosome is composed of small nuclear RNAs (five of them) and proteins that together make snRNPs-small nuclear ribonucleo proteins.

    Spliceosome is a ribozyme, meaning that RNAs inside are capable of catalyzing reactions. Catalyzed reactions by spliceosome are the removal of introns, and the ligation of the exons.
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