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Gene Expression and Chromosomes Overview

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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?

Splicing Signup and view all the answers

What is the function of the spliceosome in eukaryotes?

The removal of introns and joining of exons Signup and view all the answers

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

Binding to the TATA box Signup and view all the answers

What are the two unique eukaryotic mRNA processing steps?

Addition of methylated guanine to the 5′ end of mRNA and addition of 100–200 adenylate residues to stabilize mRNA Signup and view all the answers

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

Intervening noncoding sequences (introns) Signup and view all the answers

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

RNA polymerase Signup and view all the answers

What role do introns play in eukaryotic genes?

They are intervening noncoding sequences found in the noncoding regions of eukaryotic genes Signup and view all the answers