gene expression

Observe the pic then answer the question that follows.

Question: Gene regulation is the process that is used to:

• help make sugars for cells in plants.

• turning genes on and off.

• make glycosomes in cells.

• Not sure. Code RED need help.

When gene expression occurs

• A gene is mutated with either an insertion or deletion

• The gene is removed from the genotype in that cell

• The gene is passed on to the daughter cells during mitosis

• The gene is activated and used in protein synthesis

Which reason explains why nerve cells function differently than muscle cells?

• In nerve cells all the genes are expressed.

• In muscle cells all the genes are expressed.

• In both kinds of cells the same genes are expressed.

• In both kinds of cells different genes are expressed.

Most gene regulation happens at which step along the way?

• translation
• transcription
• signal transduction
• DNA replication

An operon is

• a genetic on/off switch in prokaryotes

• a genetic on/off switch in eukaryotes

• a group of related genes and the associated gene switches in prokaryotes

• a group of related genes and the associated gene switches in eukaryotes

Where does the RNA Polymerase bind to for the initiation of

• Regulator

• Structural genes

• Operator

• Promotor

RNA polymerase needs --- to initiate transcription.

• holoenzymes

• transcriptional factors

• histones

• microRNA

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

• True

• False

Prokaryotes regulate gene expression primarily

• in order to maintain homeostasis

• in response to changing environmental conditions

• during development as cells specialize

• Prokaryotes do not regulate gene expression. All genes are always on.

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