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Molecular Biology Chapter on Gene Expression

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Molecular Biology Chapter on Gene Expression

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What is the primary effect of alternative splicing on gene expression?

It increases the number of genes in the genome.

It enhances the transcription process of RNA.

It produces different isoforms of mRNA from the same RNA transcript. (correct)

It permanently alters the DNA sequence of a gene.

How does RNA interference (RNAi) primarily affect mRNA?

It promotes the splicing of introns from mRNA.

It stabilizes mRNA in the nucleus.

It destroys mRNA or blocks its translation. (correct)

It enhances the translation of mRNA into proteins.

Which component is responsible for the unwinding of double stranded miRNA in RNA interference?

Alternative splicing factors

Precursor miRNA Binding Complex

RISC helicase activity (correct)

mRNA stability regulators

What role do proteins that interact with spliceosomes play in alternative splicing?

<p>They determine which exon sequences are included or excluded in splicing.</p> Signup and view all the answers

What is the result of the RISC binding to complementary mRNA during the RNA interference process?

<p>It leads to the cutting of the complementary mRNA and prevents its translation.</p> Signup and view all the answers

Molecular Biology Chapter on Gene Expression

Choose a study mode

Podcast

Questions and Answers

What is the primary effect of alternative splicing on gene expression?

How does RNA interference (RNAi) primarily affect mRNA?

Which component is responsible for the unwinding of double stranded miRNA in RNA interference?

What role do proteins that interact with spliceosomes play in alternative splicing?

What is the result of the RISC binding to complementary mRNA during the RNA interference process?

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