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Worksheetsgene regulation
Total questions: 11
Worksheet time: 5mins
what is prokaryotic?
is the ability of an organism to control which gene are transcribed in response to the environment.
organism that does not have membrane bound organelles and DNA this organized in chromosomes.
organisms whose cells have a nucleus enclosed within membranes, unlike prokaryotes (Bacteria and Archaea), which have no membrane-bound organelles.
an operon consists of all the following EXCEPT
gene coding for protein
promoter
operator
gene
what does a promoter do?
it is another word for RNA
it allows a gene to be transcribed
it creates a DNA segment
it is another word for ribosome
The "on /off" switch for an operon is called the
repressor
gene
promoter
operator
what is an operon?
section of DNA that contains the genes for the proteins needed for a specific metabolic pathway
needed for DNA replication
a part of a ribsome
a part of a RNA
The tryptophan operon is a repressible operon that is
turned off whenever off tryptophan is added to the growth medium
turned off only when glucose is present in the growth medium
permanently turned on
turned on only when tryptophan is present in the growth medium
what is a gene?
a segment of RNA that encodes for a protein
a segment of DNA that control the production for a protein
a chromosome
your genome
operons are found in the cells of which of the following types of organisms?
Prokaryotes
Eukaryotas
animals only
viruses
what is the name of the stretch of DNA where RNA polymerase bind?
operator
regulatory gene
promoter
enhancer
a small molecule that binds to the repressor and makes it inactive is
operator
promoter
corepressor
inducer
In the lac operon model the genes within the operon will be expressed if:
Lactose is absent in the cell
Lactose is present in the cell
Glucose is present in the cell
