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DP IB Biology: HL

Topic Questions

Home / IB / Biology: HL / DP / Topic Questions / 2. Molecular Biology / 2.6 Transcription & Translation / Multiple Choice: Paper 1


2.6 Transcription & Translation

Question 1

Marks: 1

Which of the following steps is not involved in the process of transcription?

  • The DNA double helix separates into single strands

  • DNA polymerase binds to one of the single strands and moves along the gene

  • Free RNA nucleotides are joined together by covalent bonds

  • The RNA molecule detaches from the DNA template strand at the end of the gene

Choose your answer
  
Key Concepts
Transcription

Question 2

Marks: 1

The following diagram shows the process of translation.2-6--e-2

Which row of the following table correctly identifies the labelled components?

  P Q R S
A. anticodon codon ribosome mRNA
B. codon anticodon ribosome tRNA
C. anticodon codon ribosome tRNA
D. codon anticodon mRNA ribosome
    Choose your answer
      

    Question 3

    Marks: 1

    In a genetic engineering experiment, a piece of double-stranded DNA containing 18 000 nucleotides coding for a specific polypeptide is transcribed and translated.

    What is the total number of amino acids in this polypeptide?

    • 3 000

    • 6 000

    • 9 000

    • 18 000

    Choose your answer
      
    Key Concepts
    Codons

    Question 4

    Marks: 1

    A section of a DNA molecule contains the following base sequences:

    ATA  CCT  GCA

    Which of the following would represent the base sequences of the codons on the mRNA molecule after transcription?

    • ATA  CCT  GCA

    • AUA  CCU  GCA

    • TAT  GGA CGT

    • UAU  GGA  CGU

    Choose your answer
      

    Question 5

    Marks: 1

    Which one of the following would not be an advantage of using bacteria to produce human insulin?

    • Some bacteria can survive at very high temperatures, which will make the insulin less likely to denature

    • The insulin produced by the genetically modified bacteria is identical to human insulin

    • Bacteria uses the same genetic code as humans which makes gene transfer possible between the species

    • Bacteria can produce large quantities of insulin in a relatively short amount of time

    Choose your answer