BIO 111 Test 2 Questions and Answers | 2026
Update | 100% Correct.
miRNAs play a role in ________.
Destroying mRNA targets
RNA splicing removes introns from ________.
The RNA transcripts
DNA-bending protein brings an enhancer into contact with ________ and other proteins to
increase transcription
Transcription Factors
Epigenetic changes in gene regulation are caused by ________.
Modifications to histones and the DNA but not the nucleotide sequence itself.
Genes associated with ________, such as lactose, are typically contained on inducible
operons.
Metabolism of a specific substance
In prokaryotes, the ________ operon is under negative regulation that physically prevents
RNA polymerase from binding.
trp
In prokaryotes, ________ in a single biochemical pathway are usually found as an operon
within the genome.
________ gene regulation occurs at the level of transcription.
, Prokaryotic
Gene expression is required to give cells ________
Unique specialization
Both internal triggers and external signals can influence cells to ________.
Express different genes
In order for the ________ operon to be triggered, lactose must be present and glucose
stores depleted.
Lac
________ DNA is transcriptionally inactive.
Tightly coiled
For transcription to begin in eukaryotes, transcription factors must bind the ________
first.
DNA
Which phrase accurately describes RNA stability?
The rate at which RNA decays
The ________ is made from the DNA template by using complementary base pairing rules
and will become functional proteins.
mRNA strand
Where is RNA polymerase I active?
Update | 100% Correct.
miRNAs play a role in ________.
Destroying mRNA targets
RNA splicing removes introns from ________.
The RNA transcripts
DNA-bending protein brings an enhancer into contact with ________ and other proteins to
increase transcription
Transcription Factors
Epigenetic changes in gene regulation are caused by ________.
Modifications to histones and the DNA but not the nucleotide sequence itself.
Genes associated with ________, such as lactose, are typically contained on inducible
operons.
Metabolism of a specific substance
In prokaryotes, the ________ operon is under negative regulation that physically prevents
RNA polymerase from binding.
trp
In prokaryotes, ________ in a single biochemical pathway are usually found as an operon
within the genome.
________ gene regulation occurs at the level of transcription.
, Prokaryotic
Gene expression is required to give cells ________
Unique specialization
Both internal triggers and external signals can influence cells to ________.
Express different genes
In order for the ________ operon to be triggered, lactose must be present and glucose
stores depleted.
Lac
________ DNA is transcriptionally inactive.
Tightly coiled
For transcription to begin in eukaryotes, transcription factors must bind the ________
first.
DNA
Which phrase accurately describes RNA stability?
The rate at which RNA decays
The ________ is made from the DNA template by using complementary base pairing rules
and will become functional proteins.
mRNA strand
Where is RNA polymerase I active?
