Ib Bio Questions

10 Questions  I  By Keholmberg
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Biology Quizzes & Trivia
Practice IB HL Biology questions, enjoy.

  
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Questions and Answers

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  • 1. 
    What is one role of the element phosphorus?
    • A. 

      It forms part of the structure of amino acids.

    • B. 

      It forms part of the structure of fatty acids.

    • C. 

      It forms part of the structure of ribose.

    • D. 

      It forms part of the structure of nucleotides.


  • 2. 
    Which molecule is a monosaccharide?
    • A. 

      Ribose

    • B. 

      Glycogen

    • C. 

      Amylase

    • D. 

      Glycerol


  • 3. 
    What is a role of carbohydrates in animal cells?
    • A. 

      As channels for passive transport

    • B. 

      As enzymes

    • C. 

      As energy storage

    • D. 

      As components of the animal cell wall


  • 4. 
    Which of the following features are correct for hydrogen bonding?I.    It is involved in the cohesion of water.II.    It results in the thermal properties of water.III.    It is a bond within the water molecule.
    • A. 

      I and II only

    • B. 

      II and III only

    • C. 

      I and III only

    • D. 

      I, II and III


  • 5. 
    In which part of the digestive system is most water re-absorbed?
    • A. 

      The kidneys

    • B. 

      The stomach

    • C. 

      The small intestine

    • D. 

      The large intestine


  • 6. 
    Which of the following reactions occurs when a dipeptide is formed from amino acids?
    • A. 

      Hydrolysis

    • B. 

      Denaturation

    • C. 

      Condensation

    • D. 

      Oxidation


  • 7. 
    Which is not a primary function of protein molecules?
    • A. 

      Hormones

    • B. 

      Energy storage

    • C. 

      Transport

    • D. 

      Structure


  • 8. 
    Which of the following could be a function of a membrane protein?
    • A. 

      Energy storage

    • B. 

      Enzymatic activity

    • C. 

      Oxygen uptake

    • D. 

      Thermal insulation


  • 9. 
    What can reduce the effect of a competitive inhibitor of an enzyme?
    • A. 

      Decrease the temperature at which the reaction takes place.

    • B. 

      Increase the temperature at which the reaction takes place.

    • C. 

      Increase the substrate concentration.

    • D. 

      Add a non-competitive inhibitor.


  • 10. 
    Which of the following could cause denaturation of an enzyme?
    • A. 

      Substrate concentration

    • B. 

      A competitive inhibitor

    • C. 

      High temperature

    • D. 

      Low salt concentration


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