Gene Regulation and Expression

____ is the activation of a gene that results in transcription.

• Gene expression

• Gene technology

• Eukaryotic expression

• Prokaryotic expression

In eukaryotes, proteins that help the RNA polymerase bind to the regulatory region for transcription are called ____________.

• transcription factors

• topoisomerase

• regulatory genes

• activators

Tags

NGSS.HS-LS1-1

In a repressible operon, the corepressor

• allows transcription to progress

• allow the repressor to prevent transcription

• binds to the promoter and transcribes the gene

What type of operon is the trp (tryptophan) operon?

• inducible

• repressible

• positive control

• promotor

When a gene is activated _________ binds to the DNA at the start of the gene and moves along the DNA to create mRNA

• keritanase

• RNA polymerase

• TAQ polymerase

• catalyase

A process of turning genes on and off.

• gene mutation

• gene regulation

• gene process

• gene replication

The initial steps in gene expression are modeled. Double-stranded DNA first unwinds into two strands. Which process and product are represented in the diagrams?

• Process: transcription; product: mRNA

• Process: translation; product: protein

• Process: replication; product: tRNA

• Process: recombination; product: polymerase

Tags

NGSS.HS-LS1-1

In the absence of an inducer, gene expression of an inducible promoter will be

• on

• off

• halfway on

What is the purpose of transcription?

• to create mRNA so that a specific protein can be coded for

• to aide the cell in creating cellular energy (ATP)

• to bind amino acids together to form a polypeptide

• to ensure that daughter cells have the same DNA as the mother cell

Gene expression is the ability for a gene to be:

• in the genome.

• transcribed.

• non-coding.

• a dominant allele.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS3-2