Exam 2 Flashcards - Set 14

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  1. Archaea resemble eukaryotes in all of the following EXCEPT:
    A) DNA polymerase
    B) RNA polymerase
    C) ribosomal proteins
    D) introns
    E) nuclear membrane
    E) nuclear membrane
    (this multiple choice question has been scrambled)
  2. The primer in DNA replication is _____ starter sequence with a free _____ group.
    A) a DNA; 3' OH
    B) an RNA; 5' OH
    C) a DNA; 5' OH
    D) an RNA; 3' OH
    D) an RNA; 3' OH
    (this multiple choice question has been scrambled)
  3. If the sequence of one strand of DNA is 5' TCGATC 3', what is the sequence of the complementary strand?
    A) 5' GATCGA 3'
    B) 5' AGCTAG 3'
    C) 5' CTAGCT 3'
    D) 5' GCTAGC 3'
    A) 5' GATCGA 3'
    (this multiple choice question has been scrambled)
  4. ____ _____ is a complex enzyme that carries out transcription by making RNA copies (called ____) of a DNA template strand.
    RNA polymerase, transcripts
  5. In bacteria, the RNA pol holoenzyme if composed of:
    - Core polymerase: α2, β, β' which are required for the _____ phase
    - ____ factor: σ, which is required for the ____ phase
    • - elongation
    • - sigma, initiation
  6. The sigma factor helps the core enzyme detect the ____, which signals the beginning of the gene
    promoter
  7. During the initiation of transcription, the first ribonucleoside triphosphate (rNTP) of the new RNA chain is usually a _____.
    purine (A or G)
  8. Transcription initiation: _______ binds to the promoter. This is followed by melting of the helix and synthesis of the first nucleotide of the RNA
    RNA pol holoenzyme
  9. RNA polymerase synehtesizes RNA at ~ ____ bases/second.
    45
  10. Name the bacterial gene transcription termination signal:
    - relies on a protein called ___ and a strong pause site at the 3' end of the gene
    Rho-dependent, Rho
  11. Name the bacterial gene transcription termination signal:
    - Requires a GC-rich region of RNA, as well as 4-8 consecutive U residues
    Rho-independent
  12. Name the bacterial gene transcription termination signal:
    Image Upload
    Rho-dependent
  13. Name the bacterial gene transcription termination signal:
    Image Upload
    Rho-independent
  14. Name the RNA class:
    - encodes proteins
    Messenger RNA (mRNA)
  15. Name the RNA class:
    - forms ribosomes
    Ribosomal RNA (rRNA)
  16. Name the RNA class:
    - shuttles amino acids
    Transfer RNA (tRNA)
  17. Name the RNA class:
    - regulates transcription or translation
    Small RNA (sRNA)
  18. Name the RNA class:
    - frees ribosomes stuck on damaged mRNA
    tmRNA
  19. Name the RNA class:
    - carries out enzymatic reactions
    Calatytic RNA
  20. The average half-life for mRNA is ____ minutes.
    1-3
  21. Genes that are _____ likely evolved from a common ancestral gene.
    homologous
  22. ______ genes are duplicated via appearance of a new species and have identical function in different organisms.
    orthologous
  23. _____ genes are duplicated within a species and have slightly different tasks in a cell.
    paralogous

Card Set Information

Author:
tulipyoursweety
ID:
316914
Filename:
Exam 2 Flashcards - Set 14
Updated:
2016-03-07 01:25:43
Tags:
microbiology
Folders:
microbiology
Description:
Mechanism of Transcription and Bioinformatics
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