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  • Question
  • What is the cause of the genetic disease known as Galactosemia?


  • Options
  • A. Deficiency in lactase
  • B. Absence of galactose 1-P uridyl transferase
  • C. Absence of lactose synthetase
  • D. Non functioning of semnase

  • Correct Answer
  • Absence of galactose 1-P uridyl transferase 


  • Carbohydrate problems


    Search Results


    • 1. In the Glycolysis reaction, for each glucose conversion how many ATP's are produced?

    • Options
    • A. 4
    • B. 2
    • C. 1
    • D. 3
    • Discuss
    • 2. The function of gluconeogenesis is

    • Options
    • A. maintenance of blood glucose levels during starvation or a low carbohydrate diet
    • B. recovery of lactate from fermentation and glycerol from fat breakdown
    • C. a pathway for the utilization of amino acids
    • D. all of the above
    • Discuss
    • 3. Which of the following does not occur during gluconeogenesis?

    • Options
    • A. The carboxylation of pyruvate to oxaloacetate
    • B. The conversion of pyruvate to phosphoenolpyruvate (PEP)
    • C. The decarboxylation of oxaloacetate to phosphoenolpyruvate
    • D. The conversion of PEP to fructose bisphosphate
    • Discuss
    • 4. Which of the following in DNA replication and transcription are common?

    • Options
    • A. incorporation of deoxynucleotides
    • B. utilization the same enzyme
    • C. synthesis in the 5'-3' direction
    • D. none of the above
    • Discuss
    • 5. In an agarose gel, DNA is moving from

    • Options
    • A. cathode to anode
    • B. left to right
    • C. anode to cathode
    • D. A to B
    • Discuss
    • 6. Fructose diphosphate accumulation would

    • Options
    • A. inhibit glycolysis and gluconeogenesis
    • B. stimulate glycolysis and gluconeogenesis
    • C. stimulate glycolysis and inhibit gluconeogenesis
    • D. inhibit glycolysis and stimulate gluconeogenesis
    • Discuss
    • 7. Glycolysis reactions take place in

    • Options
    • A. cytoplasm
    • B. cell membrane
    • C. cell wall
    • D. plasmids
    • Discuss
    • 8. When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

    • Options
    • A. their enzymes lose the proper three-dimensional shape
    • B. enzyme active sites become permanently bound to substrates
    • C. the activation energy for the reaction is raised
    • D. there is insufficient molecular motion for substrates to interact
    • Discuss
    • 9. Each reaction in a metabolic pathway is

    • Options
    • A. reversible
    • B. irreversible
    • C. catalyzed by a specific enzyme
    • D. controlled by the end product
    • Discuss
    • 10. Which of the following enzymes plays an important role in the Cori " cycle?

    • Options
    • A. Glucokinase
    • B. Glucose-6-phosphate dehydrogenase
    • C. Lactate dehydrogenase
    • D. Glucose isomerase
    • Discuss


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