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BIOLO-1151 ADAMS UNIT 4 REVIEW

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47 questions
Show answers
  • Q1
    A gene is _________________.
    a functional, coding region/unit of a genome.
    a protein.
    an entire set of genetic material in an organism/cell/virus.
    30s
  • Q2
    All of the following are involved in transcription except:
    Polymerase
    Promoter
    Sigma factor
    Primer
    30s
  • Q3
    All of the following are involved in DNA replication except:
    origin of replication
    DNA polymerase
    Uracil
    primer
    30s
  • Q4
    Without ligase, cells would not be able to complete what step of replication?
    Create primers
    Unzip the DNA double helix
    Stabilize DNA during replication
    Bind DNA sequences together to generate a continuous strand
    30s
  • Q5
    What type of RNA carries and transfers amino acids?
    mRNA
    tRNA
    RNAi
    rRNA
    30s
  • Q6
    What type of RNA carries genetic information necessary to complete translations?
    rRNA
    mRNA
    tRNA
    None of these
    30s
  • Q7
    Which of the following statements is not a valid difference between prokaryotic and eukaryotic molecular biology?
    Transcription and translation occur in the cytoplasm in prokaryotes but not in eukaryotes
    Prokaryotic DNA is typically circular while eukaryotic DNA is typically linear
    Prokaryotes have free floating ribosomes while eukaryotes have free floating and fixed ribsomes
    Prokaryotes are typically haploid while eukaryotes are typically diploid
    30s
  • Q8
    Glucose and lactose are present in a lac operon scenario, is it functional, and what are the enzymes doing?
    Not functional; CAP binds to cAMP, allolastase is present and binds to the repressor
    Functional; CAP binds to cAMP, allolastase is present and binds to the repressor
    Functional; CAP does not bind to cAMP, allolactase is present and binds to the repressor
    Not functional; CAP does not bind to cAMP, allolactase is present and binds to the repressor
    45s
  • Q9
    Which of the following mutations are most likely to result in a useless protein?
    Frameshift
    Silent
    Missense
    Nonsense
    30s
  • Q10
    A sequence of DNA is composed of 18% adenine. It will contain ____% cytosine.
    32
    18
    36
    28
    30s
  • Q11
    If proof-reading fails, what is the next line of defense in repairing damaged DNA?
    Light repair
    Excision repair
    SOS repair
    30s
  • Q12
    Removal of a plasmid would result in cell death in normal conditions
    False
    True
    30s
  • Q13
    What type of chemical bonds are found in the backbone of DNA?
    None of these
    Covalent
    Ionic
    Hydrogen
    30s
  • Q14
    DNA polymerase comes before topoisomerase
    True
    False
    30s
  • Q15
    Introns are expressed into proteins.
    False
    True
    30s

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