Unit 4 Review

Front

What is post-transcriptional control of gene expression?

Back

Post-transcriptional control refers to the regulation of gene expression at the RNA level, including processes such as the removal of introns and alternative splicing of exons.

Front

What is the shape of DNA?

Back

The shape of DNA is a double helix.

Front

Translate the RNA sequence AUG AAU UGU UGA.

Back

The translation of the RNA sequence AUG AAU UGU UGA is Met-Asn-Cys-Stop.

Front

What enzyme builds mRNA during transcription?

Back

The enzyme that builds mRNA during transcription is called RNA Polymerase.

Front

How many amino acids are coded for by the nucleotide sequence ATG GGA ACT CCA?

Back

The nucleotide sequence ATG GGA ACT CCA codes for 4 amino acids.

Front

What is the function of RNA Polymerase?

Back

RNA Polymerase synthesizes RNA from a DNA template during the process of transcription.

Front

Define introns and exons.

Back

Introns are non-coding sequences in RNA that are removed during RNA processing, while exons are coding sequences that remain and are translated into proteins.

Front

What is alternative splicing?

Back

Alternative splicing is a process that allows a single gene to code for multiple proteins by rearranging the exons during RNA processing.

Front

What are transcription factors?

Back

Transcription factors are proteins that bind to specific DNA sequences to regulate the transcription of genes.

Front

What is the role of methylation in gene expression?

Back

Methylation involves adding methyl groups to DNA, which can repress gene expression by preventing transcription.