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DNA structure, replication and repair

Natalina Laria 15 preguntas

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Preguntas del test (15)

  1. 1What are the differences between prokaryotic and eukaryotic cells? Check all that apply.
    1. AEukaryotic cells have multiple linear chromosomes whereas prokaryotic cells have a singular circular chromosome
    2. BEukaryotic cells contain more genetic information
    3. CEukaryotic cells contain membrane bound organelles
    4. DProkaryotic cells contain no nucleus
    5. EProkaryotic DNA is complexed by histones
  2. 2DNA polymerase I is important in the coordination of leading and lagging strand synthesis
    1. AVerdadero
    2. BFalso
  3. 3You receive a nasty sunburn. Your DNA initially attempts to repair this damage through [blank_start]Nucleotide Excision Repair[blank_end].This initial attempt is unsuccessful but the DNA replication blockage is bypassed by [blank_start]Translesion Synthesis[blank_end].
    1. ANucleotide Excision Repair
    2. BTranslesion Synthesis
    3. CTranslesion Synthesis
    4. DNucleotide Excision Repair
    5. EPhotoreactivation
    6. FMismatch Repair
    7. GPhotoreactivation
    8. HMismatch Repair
  4. 4What DNA repair process is shown here?Imagen de la pregunta 4
    1. AHomologous End Recombination
    2. BNon-Homologous End joining
    3. CTranslesion Synthesis
  5. 5This diagram shows [blank_start]Nucleotide Excision Repair[blank_end]Imagen de la pregunta 5
    1. ANucleotide Excision Repair
    2. BBase Excision Repair
    3. CMismatch Repair
    4. DRecombination
    5. ETranslesion Synthesis
  6. 6This diagram shows [blank_start]Translesion synthesis[blank_end]Imagen de la pregunta 6
    1. ATranslesion synthesis
    2. BNucleotide excision repair
    3. CPhotoreactivation
    4. DBase excision repair
  7. 7Label the newly synthesised strand and the template strand in this diagram of mismatch repair.Imagen de la pregunta 7
    1. ANew DNA
    2. BTemplate (old) DNA strand
  8. 8[blank_start]End-joining repair[blank_end] fixes double stranded breaks and it is an [blank_start]inaccurate[blank_end] repair system.
    1. AEnd-joining repair
    2. BMismatch repair
    3. Cinaccurate
    4. Daccurate
  9. 9Origins of replication are usually [blank_start]AT-rich[blank_end] because they are joined by only 2 hydrogen bonds (compared to 3 for [blank_start]G-C pairs[blank_end]) so it requires [blank_start]less[blank_end] energy to separate the DNA strands for replication to begin.
    1. AAT-rich
    2. BGC-rich
    3. CAU-rich
    4. DG-C pairs
    5. EA-T pairs
    6. FA-U pairs
    7. Gless
    8. Hmore
  10. 10[blank_start]Single strand binding protein[blank_end] binds to unwound DNA during replication to prevent the formation of secondary structure or hairpins (or hold the unwound DNA in a rigid, unpaired structure).
    1. ASingle strand binding protein
    2. BPrimase
    3. CHeliscase
    4. DDNA polymerase

Información

Descripción
Test sobre DNA structure, replication and repair, creado por Natalina Laria el 03/06/2016.
Idioma
English
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