Genomics - L7

Front

What is the role of the holoenzyme in transcription?

Back

The holoenzyme melts DNA to form an open promoter complex, allowing transcription to begin.

Front

Which subunit of RNA polymerase is responsible for promoter recognition?

Back

The sigma factor is responsible for recognizing promoter sites.

Front

What are the two main subunits involved in phosphodiester bond formation during RNA elongation?

Back

The Beta and Beta' subunits are involved in phosphodiester bond formation.

Front

What is the function of the sigma factor in RNA polymerase?

Back

The sigma factor allows RNA polymerase to recognize and bind to promoter sites.

Front

What are the consensus sequences for the -10 and -35 boxes in prokaryotic promoters?

Back

The consensus sequences are TATAAT for the -10 box and TTGACA for the -35 box.

Front

Define transcription in the context of genomics.

Back

Transcription is the process of synthesizing RNA from a DNA template.

Front

What is the significance of the open promoter complex in transcription?

Back

The open promoter complex allows RNA polymerase to access the DNA template for transcription.

Front

Explain the difference between the core enzyme and holoenzyme in RNA polymerase.

Back

The core enzyme consists of the essential subunits for RNA synthesis, while the holoenzyme includes the sigma factor for promoter recognition.

Front

What is the function of RNA polymerase during elongation?

Back

RNA polymerase synthesizes RNA by adding nucleotides to the growing RNA strand.

Front

What is the importance of consensus sequences in gene expression?

Back

Consensus sequences are critical for the binding of RNA polymerase and the initiation of transcription.