Cellular Respiration: Stages and ATP Yield
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Questions and Answers

What is the primary function of cellular respiration in cells?

  • To regulate cell growth
  • To respond to hormonal signals
  • To synthesize proteins
  • To convert glucose into energy in the form of ATP (correct)
  • In which part of the cell does cellular respiration take place?

  • Mitochondria (correct)
  • Endoplasmic reticulum
  • Golgi apparatus
  • Nucleus
  • What is the net ATP yield from the complete breakdown of one glucose molecule?

  • 40-42 ATP
  • 24-26 ATP
  • 20-22 ATP
  • 36-38 ATP (correct)
  • Which stage of cellular respiration produces the most ATP?

    <p>Electron Transport Chain</p> Signup and view all the answers

    What is the byproduct of the Citric Acid Cycle that enters the Electron Transport Chain?

    <p>NADH and FADH2</p> Signup and view all the answers

    What is the essential function of cellular respiration in living organisms?

    <p>To provide energy for cellular activities</p> Signup and view all the answers

    Study Notes

    Overview of Cellular Respiration

    • Cellular respiration is the process by which cells convert glucose into energy in the form of ATP (adenosine triphosphate)
    • It is a vital function that occurs in the mitochondria of cells

    Stages of Cellular Respiration

    • Glycolysis: conversion of glucose into pyruvate, producing 2 ATP and 2 NADH
    • Citric Acid Cycle (Krebs Cycle): conversion of pyruvate into Acetyl-CoA, producing 2 ATP, 6 NADH, and 2 FADH2
    • Electron Transport Chain: transfer of electrons from NADH and FADH2 to oxygen, producing 32-34 ATP
    • Oxidative Phosphorylation: generation of ATP using energy from the electron transport chain

    ATP Yield

    • Total ATP yield from complete breakdown of one glucose molecule: 36-38 ATP
      • Glycolysis: 2 ATP
      • Citric Acid Cycle: 2 ATP
      • Electron Transport Chain: 32-34 ATP

    Importance of Cellular Respiration

    • Provides energy for cellular activities such as muscle contraction, nerve impulses, and cell division
    • Essential for the survival of all living organisms

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    Description

    Test your understanding of cellular respiration, the process by which cells generate energy in the form of ATP. This quiz covers the stages of cellular respiration, including glycolysis, citric acid cycle, and electron transport chain, as well as the total ATP yield. Understand the importance of cellular respiration for cellular activities and the survival of living organisms.

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