U5L5E2 & E3: Gene Regulation and Expression

True or False: All of your body cells contain the same genes.

• True

• False

Tags

NGSS.HS-LS1-4

Most gene regulation happens at which step along the way?

• translation
• transcription
• signal transduction
• DNA replication

What is the name of the stretch of DNA where RNA polymerase binds?

• operator

• promoter

• enhancer

• regulatory gene

Regulatory proteins (transcription factors) may

• encourage transcription

• prevent transcription

• stop transcription once its started

• either encourage or prevent transcription

One way to regulate the expression of a gene is to control the formation of mRNA. This is called ___ control.

• transcriptional

• translational

• post-transcriptional

• post-translational

Eukaryotes need to regulate their genes

• during cell specialization that occurs during development

• in order to maintain homeostasis

• both a and b

• neither a or b

Tags

NGSS.HS-LS1-3

NGSS.HS-LS1-4

___ are DNA sequences which are often located far from the genes they regulate in eukaryotes where transcription activators can bind.

• histones

• promotors

• enhancers

Inheritance NOT involving the nucleotide sequence of the DNA but involving chromatin modifications such as methylation is called

• epigenetic inheritance

• antigenetic inheritance

Which of the following are types of post-transcriptional control of genes in eukaryotes?

• alternative RNA splicing or processing

• gene silencing through RNA interference

• destruction of ubiquitin tagged proteins

• all of the above

Alternative RNA splicing involves

• removing introns and splicing the same exons together

• removing exons and splicing the same introns together

• removing introns and splicing different exons together

• removing exons and splicing different introns together