high; lac promoter
high; low; lac operator
low; high; lac repressor
low; high; lac operator
high; low; lac inducer
HMG CoA reductase would undergo a conformational change and lose function.
The amount of HMG CoA reductase would increase.
HMG CoA reductase would not be synthesized.
The amount of HMG CoA reductase would decrease.
HMG CoA reductase levels would not change.
consist of a promoter, an operator, structural genes, and a repressor gene.
include inducer genes.
are common in eukaryotes.
consist of structural genes only.
consist of a promoter, an operator, and two (or more) structural genes.
transcription factors; DNA methylation
promoters; DNA methylation
DNA methylation; chromosomal protein alteration
promoters; chromosomal protein alteration
chromosomal protein alteration; transcription factors
have a cell membrane.
can reproduce on their own.
require a host cell to replicate.
carry out metabolism.
Transcription factor binding
Translational repressor proteins
Modifications to the 5? cap
stimulation of viral late gene transcription.
downregulation of the host’s gene transcription.
enhancement of the host’s gene transcription.
enhancement of viral early gene transcription.
binding of a host RNA polymerase to a viral promoter.
Bacteria contain more regulatory sequences than eukaryotes do.
In eukaryotes, RNA polymerase II binds directly to the DNA promoter and initiates transcription.
Eukaryotes use RNA polymerase III to transcribe ribosomal RNA.
Eukaryotes use different RNA polymerases to transcribe rRNA and mRNA.
Bacteria use RNA polymerase III to transcribe tRNA and mRNA.
initiation of transcription is more complex in prokaryotes.
eukaryotic promoters contain operons.
there are three RNA polymerases in eukaryotes.
prokaryotic promoters have a TATA box.
structural genes for a pathway are less likely to be clustered in prokaryotes.
involves the modification of the pyrimidine cytosine.
is not important in the development of mammalian embryos.
is not abundant in promoters.
requires a histone methylase.
does not repress the transcription of genes.
after transcription but before translation.
at or after translation.
has a single-stranded DNA genome.
has a double-stranded RNA genome.
integrates its genome directly into the host’s genome.
encodes a reverse transcriptase.
has a double-stranded DNA genome.
RNA polymerase III; the initiation site; TFIID; initiation factors
RNA polymerase I; the TATA box; TFIID; transcription factors
RNA polymerase II; the initiation site; TFIID; transcription factors
RNA polymerase I; the TATA box; initiation factors; TFIID
TFIID; RNA polymerase I; an initiation site; transcription factors
code for structural proteins.
encode proteins not involved in gene regulation.
are absent in eukaryotes.
are regulatory regions of DNA.
are always constitutively expressed.