Gene Regulation and Expression, and Mutation

what does a promoter do?

• it allows a gene to be transcribed
• it creates a DNA segment
• it is another word for ribosomes
• it is another word for RNA

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

Where do mutations occur?

• DNA and RNA
• DNA 
• RNA
• mRNA and tRNA

Tags

NGSS.HS-LS3-2

What are the three possible consequences to changes in DNA? [check all that applies]

• Improved trait

• removal of trait

• No change (neutral)

• Harmful trait

Tags

NGSS.HS-LS3-2

Which of the following best describes a mutagen?

• Direct manipulation of an organism's genes using biotechnology.

• Any organism whose genetic material has been altered using genetic engineering techniques.

• An agent which can change the structure of DNA, causing a mutation.

The three types of mutagens are:

• Radiation (physical)

• Chemical

• Infectious Agents (biological)

• Smoke

• GMOs

Mutations are SOMETIMES helpful to the organism.

• true

• false

Tags

NGSS.HS-LS3-2

Genes can be shut off (not expressed) when a ___ binds to the ____.

• activator, operator

• repressor, operator

• corepressor, operator

• repressor, promotor