Mitochondria and Cellular Damage Quiz
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Questions and Answers

What is the approximate number of mitochondria per cell?

  • More than 5000
  • Several hundred to 2000 (correct)
  • Exactly 1000
  • Less than a hundred
  • What is the source of energy production in mitochondria?

  • Protein synthesis
  • DNA replication
  • Glycolysis
  • Citrate cycle and fatty acid oxidation (correct)
  • What happens to mitochondrial DNA copy number with aging or disease?

  • It remains constant
  • It increases
  • It decreases (correct)
  • It becomes unstable
  • What is the consequence of defects in ATP production in mitochondria?

    <p>Neuronal deficits due to lack of energy</p> Signup and view all the answers

    What is the primary function of mitochondria in a cell?

    <p>Energy production</p> Signup and view all the answers

    Study Notes

    Mitochondria Structure and Function

    • The approximate number of mitochondria per cell varies, but it can range from 100 to 1,000, depending on the cell type and energy demands.

    Energy Production in Mitochondria

    • The source of energy production in mitochondria is oxidative phosphorylation, where cells convert glucose into ATP (adenosine triphosphate) through cellular respiration.
    • Mitochondria are often referred to as the "powerhouses" of the cell because they generate most of the energy that the cell needs to function.

    Mitochondrial DNA and Aging/Disease

    • Mitochondrial DNA copy number tends to decrease with aging or disease, leading to impaired mitochondrial function and energy production.

    Consequences of ATP Production Defects

    • Defects in ATP production in mitochondria can lead to cellular energy deficiency, which can cause a wide range of diseases, including neurodegenerative disorders, metabolic disorders, and cancer.

    Primary Function of Mitochondria

    • The primary function of mitochondria in a cell is to generate energy for the cell through the production of ATP, which is essential for various cellular processes, such as muscle contraction, nerve impulses, and cell division.

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    Description

    Test your knowledge about mitochondria, their structure, function, and the types of damage they can sustain such as increased ROS production and DNA damage.

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