AP Biology: Gene Regulation
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20 QuestionsShow answers
  • Question 1
    30 seconds
    Q. What does a promoter do?
    answer choices
    it allows a gene (or genes) to be transcribed
    it creates a DNA segment
    it is another word for ribosomes
    it is another word for RNA
  • Question 2
    30 seconds
    Q. An operon consists of all the the following EXCEPT
    answer choices
    operator
    promoter
    regulatory gene
    genes of the operon (gene cluster)
  • Question 3
    30 seconds
    Q. A protein that binds to the operator and blocks the RNA polymerase
    answer choices
    regulator
    repressor
    activator
    corepressor
  • Question 4
    30 seconds
    Q. The "on/off" switch for an operon is called the
    answer choices
    promoter
    repressor
    operator
    gene
  • Question 5
    30 seconds
    Q. A small molecule that binds to a repressor and makes it ACTIVE is a
    answer choices
    repressor
    regulator
    activator
    corepressor
  • Question 6
    30 seconds
    Q. A small molecule that binds to the repressor and makes it INACTIVE is a
    answer choices
    corepressor
    inducer
    promoter
    operator
  • Question 7
    30 seconds
    Q. When something sticks to the DNA to turn off gene expression, this is considered:
    answer choices
    negative control
    positive control
    regular control
    unleaded control
  • Question 8
    30 seconds
    Q.

    When a gene is transcribed when turned on by activator that sticks to DNA or changes the shape of a molecule already attached, it is considered _____ control

    answer choices

    positive

    negative

    "out of"

    ground

  • Question 9
    30 seconds
    Q. Two types of negative control are
    answer choices
    repressible & inducible
    repressible & active
    active & inactive
    repressible & corepressible
  • Question 10
    30 seconds
    Q. Inducible negative control is when the gene cluster is transcribed when there is the ____ of a specific molecule from a metabolic pathway.
    answer choices
    presence
    absence
  • Question 11
    30 seconds
    Q. Repressible negative control is when the gene cluster is transcribed when there is the ____ of a specific molecule from a metabolic pathway.
    answer choices
    presence
    absence
  • Question 12
    30 seconds
    Q. All of the following are true about DNA methylation EXCEPT
    answer choices
    takes place on the DNA
    enzymes add a methyl group
    when it occurs, transcription is more likely to occur
    chromatin becomes more tightly packed
  • Question 13
    30 seconds
    Q. All of the following are true about histone acetylation EXCEPT
    answer choices
    takes place on the histone
    enzymes add a acetyl group
    when it occurs, transcription is more likely to occur
    chromatin becomes more tightly packed
  • Question 14
    30 seconds
    Q. Inheritance of traits by mechanisms not directly involving nucleotide sequence is called
    answer choices
    epigenetic inheritance
    differential gene expression
    chromosomal inheritance
    gene regulation
  • Question 15
    30 seconds
    Q. In eukaryotes, a cluster of proteins that assemble on the promoter is called the
    answer choices
    transcription initiation complex
    control element
    activator
    protein blobby thing
  • Question 16
    30 seconds
    Q. In eukaryotes, proteins that help the RNA polymerase bind to the promoter for transcription
    answer choices
    transcription factors
    topoisomerase
    regulatory genes
    activators
  • Question 17
    30 seconds
    Q. A distal control region that activators bind to are bent to contact mediator proteins and form the transcription initiation complex
    answer choices
    enhancers
    promoters
    repressors
    transcription factors
  • Question 18
    30 seconds
    Q. Which of the following is NOT a way to change gene expression in eukaryotes?
    answer choices
    alternative splicing
    mRNA processing
    repressor protein binds to operator
    histone acetylation
  • Question 19
    30 seconds
    Q. Which of the following is a CORRECT DIFFERENCE between prokaryotic gene expression and eukaryotic gene expression?
    answer choices
    Prokaryotes transcribe one gene at a time, eukaryotes transcribe gene clusters
    Prokaryotes use RNA polymerase to transcribe while eukaryotes use DNA polymerase
    Prokaryotes have introns and eons while eukaryotes have only exons
    Prokaryotes make proteins relatively unmodified while eukaryotes can have significant post-translational modifications
  • Question 20
    30 seconds
    Q. Which of the following is FALSE regarding eukaryotic gene regulation?
    answer choices
    Activators bind to enhancers
    Transcription factors and mediators help all of the proteins bind into a complex
    The DNA bends to allow RNA polymerase to bind and transcribe
    Operons can be either inducible or repressible
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