18 Questions
Which of the following is a distinguishing structural feature of RNA compared to DNA?
Ability to bend and cause intra-molecular base pairing
In eukaryotic cells, RNA moves from the nucleus to the cytoplasm, as demonstrated by which famous experiment?
Pulse-chase experiment by Volkin & Astrachan
Which class of RNA acts as an enzyme and is capable of catalyzing chemical reactions?
Messenger RNA (mRNA)
What is the primary function of Transfer RNA (tRNA) in the cell?
Guiding the assembly of amino acids during translation
Which small RNA molecule is involved in splicing introns from messenger RNAs?
Small nuclear RNAs (snRNAs)
What is the major function of Ribosome RNA (rRNA) within a cell?
Guiding the assembly of amino acids into proteins
What is the main difference between the structure of RNA and DNA?
RNA contains uracil instead of thymine found in DNA
How is RNA polymerase positioned correctly to initiate transcription?
By binding directly to the promoter region on the DNA
What happens to eukaryotic RNA before it leaves the nucleus?
It undergoes splicing and capping
Why are self-splicing introns considered important?
They remove themselves from the RNA molecule
Which of the following is NOT a class of RNA found in a cell?
Nuclear RNA (nRNA)
Insufficient transcription of genes needed for red blood cell production could lead to:
Anemia
What is the main function of functional RNA in a cell?
Regulate the amount of protein produced
Which type of RNA is about 300 nucleotides long and its function is still to be fully defined?
Long noncoding RNAs (lncRNAs)
How does transcription begin in a cell?
When RNA polymerase binds to a specific promoter of a gene
Which direction does RNA transcription occur in, relative to the DNA template orientation?
5' to 3'
What is the main role of self-splicing introns in gene expression?
Remove themselves from RNA transcripts
Which term is used interchangeably with Functional RNAs?
Non-protein-coding RNA (ncRNA)
Test your knowledge on the life cycle of mRNA, molecular interactions between DNA, RNA, and proteins, the movement of RNA in eukaryotic cells, and the chemical properties of RNA. Explore key concepts such as RNA as the intermediary between DNA and protein.
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