Protein Synthesis Quiz

19 Questions  I  By Smccarthy
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  • 1. 
    Introns are
    • A. 

      Noncoding sections of RNA

    • B. 

      Coding sections of RNA

    • C. 

      Complex of molecules that cut out the introns and splice together the exons; consists of snRNPs and proteins

    • D. 

      Involves the removal of introns, fusing of the exons, and the addition of a 5' cap and a Poly A tail to RNA


  • 2. 
    Region of DNA where RNA polymerase binds and transcription begins
    • A. 

      Transcription factors

    • B. 

      TATA box

    • C. 

      RNA polymerase

    • D. 

      Promoter

    • E. 

      Termination Sequence


  • 3. 
    Ribosomes that generally make proteins for use within the cell
    • A. 

      Free

    • B. 

      Attached


  • 4. 
    MRNA binds to the small ribosomal subunit during
    • A. 

      Elongation

    • B. 

      Termination

    • C. 

      Initiation


  • 5. 
    Short sequence in the promoter where transcription factors bind
    • A. 

      TATA box

    • B. 

      Promoter

    • C. 

      RNA polymerase

    • D. 

      Initiation Sequence

    • E. 

      Termination Sequence


  • 6. 
    MRNA is processed or modified before translation
    • A. 

      True of eukaryotic transcription

    • B. 

      True of both eukaryotic and prokaryotic transcription

    • C. 

      True of prokaryotic transcription


  • 7. 
    What RNA strand would be produced from the following DNA strand?CCTCATGGC
    • A. 

      GGAGTACCG

    • B. 

      CCTCATGGC

    • C. 

      CCUCAUGGC

    • D. 

      GGAGUACCG


  • 8. 
    Which molecule picks up amino acids and brings them to the ribosome?
    • A. 

      DNA

    • B. 

      MRNA

    • C. 

      TRNA


  • 9. 
    Which of the following is true of ribosomes?
    • A. 

      Ribosomes consist of DNA and Protein

    • B. 

      Ribosomes consist of a single unit

    • C. 

      Ribosomes have 3 binding sites (A,P andE)

    • D. 

      Ribosomes are the site of DNA replication


  • 10. 
    What is wobble?
    • A. 

      A mutagen that causes the replacement of one DNA base for another

    • B. 

      The base pairing between mRNA and tRNA

    • C. 

      Relaxation of base pairing of the 3rd base in the the triplet codon

    • D. 

      The process of peptide bond formation between amino acids


  • 11. 
    What is the function of RNA polymerase?
    • A. 

      Form peptide bonds between amino acids

    • B. 

      Add RNA nucleotides to exposed bases on DNA

    • C. 

      Produce the RNA primer required for DNA replication

    • D. 

      Produce Amino Acids


  • 12. 
    The stop codon on mRNA reaches the A site  during when?
    • A. 

      Elongation

    • B. 

      Termination

    • C. 

      Initiation


  • 13. 
    Where does translation occur?
    • A. 

      In the nucleus of the cell

    • B. 

      Outside the cell

    • C. 

      At the ribosomes in the cytoplasm of the cell


  • 14. 
    All of the following enzymes are involved in DNA replication EXCEPT
    • A. 

      Helicase

    • B. 

      DNA ligase

    • C. 

      DNA polymerases

    • D. 

      RNA polymerases

    • E. 

      Primase


  • 15. 
    In bacteria, a small circular piece of DNA found outside the main chromosome is called a
    • A. 

      Plasmid

    • B. 

      CDNA

    • C. 

      RFLP

    • D. 

      PCR

    • E. 

      Genetic fingerprint


  • 16. 
    Which of the following would most likely cause a mutation with the greatest deleterious effect?
    • A. 

      An insertion of a nucleotide triplet into a DNA strand that codes for mRNA

    • B. 

      A deletion of a nucleotide triplet from a DNA strand that codes for mRNA

    • C. 

      A single substitution of a nucleotide in a DNA strand that, when transcribed, results in a change in the nucleotide occupying the third codon position in an mRNA

    • D. 

      A single substitution of nucleotide in a DNA strand that, when transcribed, results in a change in the nucleotide occupying the first codon position in an mRNA

    • E. 

      A single addition of a nucleotide in a DNA strand that codes for an mRNA


  • 17. 
    RNA has all of the following EXCEPT:
    • A. 

      Ribose

    • B. 

      Single strand

    • C. 

      Contains uracil

    • D. 

      Deoxyribose


  • 18. 
    The lac operon in E.coli is involved in
    • A. 

      Regulation the expression of a gene

    • B. 

      Regulating the translation of mRNA

    • C. 

      Controlling the formation of ribosomes

    • D. 

      Controlling DNA replication

    • E. 

      Preventing the transfer of the F plasmid


  • 19. 
    An mRNA actively being translated in the cytoplasm would have all of the following EXCEPT:
    • A. 

      A poly-A tail

    • B. 

      A 5' cap

    • C. 

      Exons

    • D. 

      Introns

    • E. 

      RNA nucleotides


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