MicroRNAs and Gene Expression Regulation Quiz

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the process called when different cells use the same DNA gene to synthesize different mRNAs and proteins by selecting different exons during splicing?

Alternative RNA splicing (correct)

RNA processing

Initiation of translation

Post-translational modification

What are microRNAs and how do they regulate gene expression?

Small double-stranded RNA molecules that can regulate gene expression by binding to complementary sequences on DNA molecules in the nucleus and triggering their breakdown or blocking transcription

Small single-stranded DNA molecules that can regulate gene expression by binding to complementary sequences on DNA molecules in the nucleus and triggering their breakdown or blocking transcription

Small double-stranded RNA molecules that can regulate gene expression by binding to complementary sequences on mRNA molecules in the cytoplasm and triggering their breakdown or blocking translation (correct)

Small single-stranded DNA molecules that can regulate gene expression by binding to complementary sequences on mRNA molecules in the cytoplasm and triggering their breakdown or blocking translation

What are DNA microarrays and how are they used in research?

Slides with thousands of different kinds of single-stranded DNA fragments attached in a tightly spaced array, allowing researchers to determine which genes are switched on or off in a particular cell by comparing patterns of gene expression (correct)

Slides with thousands of different kinds of double-stranded RNA fragments attached in a loosely spaced array, allowing researchers to determine which genes are switched on or off in a particular cell by comparing patterns of gene expression

Slides with thousands of different kinds of double-stranded RNA fragments attached in a tightly spaced array, allowing researchers to determine which genes are switched on or off in a particular cell by comparing patterns of gene expression

Slides with thousands of different kinds of single-stranded DNA fragments attached in a loosely spaced array, allowing researchers to determine which genes are switched on or off in a particular cell by comparing patterns of gene expression