How is bacterial translation different from eukaryotic translation?
  • Bacteria can begin translation before transcription has terminated.
  • The anticodon on the tRNA base pairs to the codon on the mRNA
  • Lagging strand, DNA ligase, and discontinuous
  • Bacteria growing on glucose as the sole carbon source grow faster than on lactose
Which of the following are terms associated with Okazaki fragments?
  • Lagging strand, DNA ligase, and discontinuous
  • mRNA is made by copying specific regions of DNA called genes. Ribosomes use mRNA as instructions, which provide a code specifying the order of amino acids in a protein.
  • The structural genes
  • It serves as the template for DNA replication.
According to the animation, ribosomes move along the mRNA in which direction?
  • It binds to the operator when activated.
  • methionine
  • The promoter
  • 5' to 3'
What characteristic of DNA allows two connected DNA polymerases to synthesize both the leading and lagging strands?
  • The operator region
  • Allolactose
  • a polypeptide
  • DNA is flexible.
Where would one find an uncharged tRNA molecule in a ribosome?
  • The operator region
  • It is always transcribed
  • In the P and E sites
  • Repressible operons
Which of the following is a DNA strand complementary to CGA ATC AGC?
  • Trp
  • GCT TAG TCG
  • Bacteria growing on glucose as the sole carbon source grow faster than on lactose
  • tRNA
Why is DNA replication essential for a cell?
  • An organism must copy its DNA to pass genetic information to its offspring.
  • To ensure that the cell has a supply of tryptophan at all times
  • Bacteria can begin translation before transcription has terminated.
  • The synthesis is moving in the opposite direction from the replication fork.
When is the repressor protein transcribed?
  • It is always transcribed
  • To ensure that the cell has a supply of tryptophan at all times
  • In the P and E sites
  • It serves as the template for DNA replication.
According to the animation, which of the following makes mRNA from the information stored in a DNA template?
  • 5' to 3'
  • RNA polymerase
  • It binds to the operator when activated.
  • a polypeptide
According to the animation, to what genetic element does the RNA polymerase bind?
  • 5' to 3'
  • The promoter
  • The operator
  • RNA polymerase
How many codons code for the amino acid arginine?
  • Six
  • Trp
  • mRNA
  • rRNA
How does the ribosome know if the entering charged tRNA is correct?
  • The anticodon on the tRNA base pairs to the codon on the mRNA
  • the repressor proteins bind to the operator.
  • Lagging strand, DNA ligase, and discontinuous
  • Bacteria can begin translation before transcription has terminated.
Which of the following amino acids is coded by only one codon?
  • mRNA
  • GCT TAG TCG
  • Trp
  • The structural genes
During the initiation step of translation, the fMet charged tRNA assembles in which site of the ribosome?
  • 5' to 3'
  • The promoter
  • P site
  • It binds to the operator when activated.
When the cell is not in the presence of lactose,
  • It serves as the template for DNA replication.
  • the repressor proteins bind to the operator.
  • RNA polymerase can transcribe mRNA.
  • The anticodon on the tRNA base pairs to the codon on the mRNA
Which operons are always transcribed unless deactivated?
  • The structural genes
  • Leading strand
  • Inducible operons
  • Repressible operons
What would happen if the DNA sequence that coded for Cys was mutated in the third position from a U to an A?
  • A stop codon would be introduced prematurely.
  • It binds to the operator when activated.
  • It serves as the template for DNA replication.
  • The anticodon on the tRNA base pairs to the codon on the mRNA
Which of the following statements concerning sugar utilization in E. coli is true?
  • mRNA is made by copying specific regions of DNA called genes. Ribosomes use mRNA as instructions, which provide a code specifying the order of amino acids in a protein.
  • Bacteria can begin translation before transcription has terminated.
  • Lagging strand, DNA ligase, and discontinuous
  • Bacteria growing on glucose as the sole carbon source grow faster than on lactose
What is the overall function of the trp operon?
  • The anticodon on the tRNA base pairs to the codon on the mRNA
  • It serves as the template for DNA replication.
  • They link the leading strand DNA polymerase and the lagging strand DNA polymerase together
  • To ensure that the cell has a supply of tryptophan at all times
Which DNA strand is synthesized continuously?
  • Allolactose
  • Lagging strand, DNA ligase, and discontinuous
  • Leading strand
  • a polypeptide
What is the function of the parental DNA in replication?
  • It is always transcribed
  • To ensure that the cell has a supply of tryptophan at all times
  • It serves as the template for DNA replication.
  • They link the leading strand DNA polymerase and the lagging strand DNA polymerase together
Ribosomes contain which of the following?
  • rRNA
  • mRNA
  • tRNA
  • Trp
With which genetic region does the repressor protein interact?
  • Repressible operons
  • The operator
  • The promoter
  • The operator region
According to the animation, where on the DNA strand does a repressor bind?
  • The operator
  • The promoter
  • 5' to 3'
  • RNA polymerase
How is translation terminated?
  • The anticodon on the tRNA base pairs to the codon on the mRNA
  • The synthesis is moving in the opposite direction from the replication fork.
  • To ensure that the cell has a supply of tryptophan at all times
  • When a protein called a release factor enters and binds to the A site
Which operons are never transcribed unless activated?
  • Inducible operons
  • The structural genes
  • Repressible operons
  • The operator region
What is the basic function of the lac operon?
  • To ensure that the cell has a supply of tryptophan at all times
  • They link the leading strand DNA polymerase and the lagging strand DNA polymerase together
  • To code for enzymes involved in catabolizing lactose.
  • the repressor proteins bind to the operator.
Which of the following is involved in bringing amino acids to the ribosomes?
  • GCT TAG TCG
  • rRNA
  • tRNA
  • mRNA is made by copying specific regions of DNA called genes. Ribosomes use mRNA as instructions, which provide a code specifying the order of amino acids in a protein.
What kind of bond is formed when two amino acids join together?
  • In the P and E sites
  • A peptide bond
  • Repressible operons
  • aspartic acid
What is the function of the connector proteins?
  • To ensure that the cell has a supply of tryptophan at all times
  • It serves as the template for DNA replication.
  • They link the leading strand DNA polymerase and the lagging strand DNA polymerase together
  • The synthesis is moving in the opposite direction from the replication fork.
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