Molecular Biology Quiz: DNA Transcription, Translation, Replication

13 Questions | Total Attempts: 7235

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Molecular Biology Quiz: DNA Transcription, Translation, Replication

Transcription is the first step of gene expression, where the messenger RNA is decoded in a ribosome to produce polypeptide which later folds into an active protein and performs its functions in the cell. During this one week, we tried to understand the structure, function, and processes of DNA and RNA in the cell. See how much you understand about it by taking this quiz.


Questions and Answers
  • 1. 
    DNA and RNA are different because:
    • A. 

      DNA uses Uracil while RNA uses Thymine

    • B. 

      DNA is double stranded while RNA is triple stranded

    • C. 

      DNA is only found in the nucleus while RNA can travel anywhere in the cell

    • D. 

      DNA is made of four bases while RNA is made of five bases

    • E. 

      B and C are correct

  • 2. 
    Using the following DNA sequence, what would be the corresponding DNA strand? ATTGCGACCGAG
    • A. 

      UAACGCUGGCUC

    • B. 

      AUUGCGACCGAG

    • C. 

      TAACGCTCCCTC

    • D. 

      UATCGCTGGCUC

    • E. 

      None of the above are correct

  • 3. 
    Which of the following is NOT a type of RNA?
    • A. 

      Messenger

    • B. 

      Transcription

    • C. 

      Transfer

    • D. 

      Ribosomal

    • E. 

      These are all types of RNA

  • 4. 
    Where does DNA replication occur?
    • A. 

      In the nucleus

    • B. 

      In the cytoplasm

    • C. 

      At the ribosome

    • D. 

      In the mitochondrion

  • 5. 
    When transcription occurs, what molecules are involved?
    • A. 

      DNA and rRNA

    • B. 

      DNA, mRNA, amino acids, and rRNA

    • C. 

      DNA and tRNA

    • D. 

      DNA and mRNA

  • 6. 
    When translation occurs, what molecules are involved?
    • A. 

      DNA, mRNA, tRNA, rRNA, and amino acids

    • B. 

      DNA and mRNA

    • C. 

      DNA and rRNA

    • D. 

      DNA, rRNA, and tRNA

  • 7. 
    What would be the corresponding sequence to the following DNA sequence as a result of TRANSCRIPTION? TAAGCATTCCGAG
    • A. 

      ATTCGTAAGGCTC

    • B. 

      AUUCGUAAGGCUC

    • C. 

      UTTCGTUUGGCTC

    • D. 

      UUUGCUUUCCGUG

  • 8. 
    Where in the cell would rRNA be found?
    • A. 

      Nucleus

    • B. 

      Ribosomes

    • C. 

      Golgi Apparatus

    • D. 

      Cholorplast

  • 9. 
    What is the role of messenger RNA?
    • A. 

      To bring the DNA message to the mitochondrion

    • B. 

      To bring the tRNA message to the nucleus

    • C. 

      To bring the DNA message to the ribosome

    • D. 

      To take amino acids to the ribosome

  • 10. 
    An mRNA codon has the following sequence: ACU What is the corresponding tRNA sequence called, and what would the sequence be?
    • A. 

      Codex; UGA

    • B. 

      Codon; TGA

    • C. 

      TCode; TGU

    • D. 

      Anticodon; UGA

  • 11. 
    Describe the process of DNA transcription. What is the sequence of events that occurs? Where does it occur? What is the result of this process? What will happen next? 
  • 12. 
    What are four differences between RNA and DNA?
  • 13. 
    Describe the process of translation (protein synthesis).  Be sure to explain it step-by-step and describe the molecules involved at each step.  Be sure to describe where each step occurs.
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