Unit 4 Review

Front

RNA polymerase moves in which direction along the DNA?

Back

3' to 5' along the template strand.

Front

What are promoters?

Back

DNA sequences near structural genes that initiate transcription.

Front

What is the key difference between induction and repression in prokaryotic gene regulation?

Back

Induction increases transcription in response to a signal, while repression decreases transcription in response to a signal.

Front

What is the enzyme that unzips the DNA to prepare for replication?

Back

Helicase.

Front

At which step does most gene regulation happen?

Back

Transcription.

Front

What is the role of helicase in DNA replication?

Back

Helicase unwinds the DNA double helix, separating the two strands.

Front

Define transcription in the context of gene expression.

Back

Transcription is the process of copying a segment of DNA into RNA.

Front

What is the function of RNA polymerase?

Back

RNA polymerase synthesizes RNA from a DNA template during transcription.

Front

Explain the concept of gene regulation.

Back

Gene regulation refers to the mechanisms that control the expression of genes, determining when and how much of a gene product is made.

Front

What is the difference between structural genes and regulatory genes?

Back

Structural genes code for proteins, while regulatory genes control the expression of other genes.