Regulation of gene expression

Front

Microarrays

Back

A technique that uses thousands of complementary probes to look for specific mRNA molecules

Front

qPCR

Back

Quantitative polymerase chain reaction - a method to measure the abundance of specific DNA sequences in a sample

Front

Western blot

Back

A technique that uses antibodies to detect and identify specific proteins in a sample

Front

Mass spectrometry

Back

A technique used to identify and quantify proteins based on their mass and charge

Front

What is the role of riboswitches?

Back

Regulate gene expression

Front

The proteome of a cell is often more complex than its transcriptome because

Back

Post-translational modifications can lead to many protein isoforms.

Front

Which type of RNA is primarily involved in regulating gene expression post-transcriptionally by degrading mRNA or inhibiting its translation?

Back

Small interfering RNA (siRNA)

Front

In the absence of lactose, which of the following statements accurately describes the state of the lac operon?

Back

The repressor protein is bound to the operator region, preventing transcription.

Front

Which of the following correctly describes the role of allolactose in the regulation of the lac operon?

Back

It acts as an inducer by binding to the repressor, causing it to detach from the operator.

Front

Which of the following is the correct mechanism by which glucose levels affect the activity of the lac operon?

Back

Low glucose levels result in high cAMP, which forms a complex with CAP to enhance transcription.