Protein Synthesis Quiz

19 Questions
Nutrition Quizzes & Trivia

Protein synthesis is the process whereby biological cells generate new proteins, and it is balanced by the loss of cellular proteins via degradation or export. What can you tell us about this particular scientific process?

Please wait...
Questions and Answers
  • 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. 
    • 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