Gene Expression and Chromosomes Overview
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Questions and Answers

What are the three promoter elements critical for promoter recognition in Archaea?

  • The TATA-binding protein (TBP), transcription factor B (TGB), and RNA polymerase
  • The coding sequences, intervening noncoding sequences, and methylated guanine
  • The initiator element (INIT), the TATA box, and the B recognition element (BRE) (correct)
  • The replication, transcription, and translation elements

Which protein binds to both BRE and INIT?

  • Transcription factor B (TFB) (correct)
  • RNA polymerase
  • Transcription factor A (TFA)
  • The TATA-binding protein (TBP)

What is formed after splicing occurs in eukaryotes?

  • Introns
  • Mature RNAs for translation (correct)
  • Coding sequences
  • Intervening noncoding sequences

Which process occurs in the nucleus via the spliceosome in eukaryotes?

<p>Splicing (D)</p> Signup and view all the answers

What is the function of the spliceosome in eukaryotes?

<p>The removal of introns and joining of exons (C)</p> Signup and view all the answers

What is the function of the TATA-binding protein (TBP) in Archaea?

<p>Binding to the TATA box (A)</p> Signup and view all the answers

What are the two unique eukaryotic mRNA processing steps?

<p>Addition of methylated guanine to the 5′ end of mRNA and addition of 100–200 adenylate residues to stabilize mRNA (D)</p> Signup and view all the answers

Which elements are found in the noncoding regions of eukaryotic genes?

<p>Intervening noncoding sequences (introns) (B)</p> Signup and view all the answers

What protein binds to the RNA polymerase once both TBP and TFB are in place in Archaea?

<p>RNA polymerase (A)</p> Signup and view all the answers

What role do introns play in eukaryotic genes?

<p>They are intervening noncoding sequences found in the noncoding regions of eukaryotic genes (C)</p> Signup and view all the answers

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