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ATP yield and efficiency Knowledge-Based Practice

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on ATP yield and efficiency. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    Under standard conditions, the complete aerobic catabolism of one mole of glucose yields approximately 30 to 32 moles of ATP, capturing roughly 234 kcal out of 686 kcal of available free energy. What is the approximate energy efficiency of this process, and what happens to the remainder of the energy?

    • A) About 34% of the energy is conserved in ATP, while the remaining energy is dissipated as heat.
    • B) About 68% of the energy is conserved in ATP, while the remaining energy is stored in mitochondrial cristae.
    • C) About 15% of the energy is conserved in ATP, while the remaining energy is retained in carbon dioxide and water molecules.
    • D) About 85% of the energy is conserved in ATP, while the remaining energy is consumed by cytoplasmic glycolysis.

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