Eukaryotic Gene Expression – Complexity of RNA Structure
About the Lecture
The lecture Eukaryotic Gene Expression – Complexity of RNA Structure by Kevin Ahern, PhD is from the course RNA and the Genetic Code.
Included Quiz Questions
Which of the following statements about nucleosomes is not correct?
- Histone H1 is found in the center of the octet core.
- It contains two copies each of histones H2a, H2b, H3, and H4.
- DNA is wrapped around the histones.
- The negatively charged DNA is attracted to the positively charged histones.
- Histones are composed of basic amino acids.
Which of the following is true regarding the acetylation of histones?
- It causes them to be less positively charged.
- It occurs on glycine side chains.
- It causes transcription to be inactivated.
- It creates heterochromatin.
- Acetyl-CoA covers positive charges of glycine.
Enhancer sequences in the eukaryotic DNA help in doing what?
- Binding and set-up of the transcriptional machinery.
- Deacetylation of the H1 protein.
- Ubiquitination of H2A and H2B proteins.
- Binding of helicase and topoisomerase enzymes along with DNA polymerase at the centromere of the chromosome.
- Binding of the nucleases to the damaged DNA sequence.
Which enzyme helps in the conversion between euchromatin and heterochromatin?
- Histone deacetylase
- Topoisomerase
- Nuclease
- Phosphorylase
- Phosphofructokinase
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Author of lecture Eukaryotic Gene Expression – Complexity of RNA Structure
Kevin Ahern, PhD
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