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Entner-Doudoroff Pathway quiz

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  • What type of organisms use the Entner-Doudoroff pathway (EDP)?
    The EDP is used by some bacteria but not by eukaryotes.
  • What is the main function of the Entner-Doudoroff pathway in glycolysis?
    The EDP serves as an alternative to the energy investment phase of glycolysis.
  • How many ATP molecules are invested in the EDP to produce G3P?
    Only one ATP molecule is invested in the EDP to produce one G3P molecule.
  • How many G3P molecules are produced in the EDP compared to normal glycolysis?
    The EDP produces one G3P molecule, while normal glycolysis produces two.
  • What important electron carrier is produced by the EDP but not by normal glycolysis?
    The EDP produces NADPH, which is not produced in normal glycolysis.
  • What is the role of NADPH produced in the EDP?
    NADPH is a crucial electron carrier used in biosynthetic (anabolic) reactions.
  • After the EDP, what phase of glycolysis still occurs?
    The energy harvest phase still occurs after the EDP.
  • How does the amount of NADH and ATP produced in the EDP compare to normal glycolysis?
    The EDP produces half the amount of NADH and ATP compared to normal glycolysis.
  • How many net ATP molecules are produced in the EDP?
    The EDP produces a net of one ATP molecule.
  • How many pyruvate molecules are produced at the end of the EDP?
    Two pyruvate molecules are produced, though by different mechanisms than normal glycolysis.
  • What distinguishes the EDP from the normal glycolytic pathway?
    The EDP is distinguished by its production of NADPH and its use of only one ATP to produce one G3P.
  • Does the EDP produce more, less, or the same amount of G3P as normal glycolysis?
    The EDP produces less G3P (one molecule) than normal glycolysis (two molecules).
  • Why is the production of NADPH by the EDP significant?
    NADPH is significant because it is used for biosynthetic reactions, which are essential for building cellular molecules and structures.
  • Is NADPH produced in normal glycolysis?
    No, NADPH is not produced in normal glycolysis.
  • What is the main reason some bacteria use the EDP instead of the normal glycolytic pathway?
    Some bacteria use the EDP mainly to generate NADPH for biosynthetic reactions.