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Cellular Respiration01:18

Cellular Respiration

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Cellular respiration is a crucial metabolic process through which cells obtain energy from organic substances, mainly glucose, to produce adenosine triphosphate (ATP). This process includes the oxidation of substrates and the transfer of electrons to a separate electron acceptor, facilitating ATP synthesis through a sequence of biochemical reactions.Glycolysis: The Initial StepGlycolysis is the first stage of cellular respiration, occurring in the cytoplasm of both prokaryotic and eukaryotic...
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Overview of Metabolism01:40

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Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
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Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
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Metabolism encompasses all biochemical reactions in a living organism, facilitating both the breakdown and synthesis of biomolecules. These metabolic processes are categorized into catabolic and anabolic pathways, which operate in a coordinated manner to ensure energy balance and cellular function.Catabolic Pathways and Energy ReleaseCatabolic pathways involve the breakdown of complex macromolecules such as carbohydrates, lipids, and proteins into smaller structures like monosaccharides, fatty...
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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Updated: Nov 7, 2025

Autofluorescence Imaging to Evaluate Cellular Metabolism
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Cellular metabolism and diseases.

Maria Chiara Maiuri1,2, Pasquale Maffia3,4,5

  • 1Team "Metabolism, Cancer & Immunity", Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Université, Université de Paris, Paris, France.

British Journal of Pharmacology
|May 1, 2021
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Summary
This summary is machine-generated.

This article is part of a themed issue on cellular metabolism and diseases. Explore the latest research on metabolic pathways and their links to various health conditions.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pathology

Background:

  • This article is part of a themed issue focusing on the critical role of cellular metabolism in disease.
  • It highlights recent advancements in understanding metabolic dysregulation in various pathological conditions.

Discussion:

  • The interconnectedness of metabolic pathways and disease pathogenesis is explored.
  • Discussions cover how altered cellular metabolism contributes to the development and progression of diseases.

Key Insights:

  • Cellular metabolism is a central player in numerous diseases.
  • Understanding metabolic alterations offers novel therapeutic targets.

Outlook:

  • Future research directions in cellular metabolism and disease are outlined.
  • Potential for metabolic interventions in treating complex diseases is emphasized.