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Related Concept Videos

Regulation of Metabolism01:19

Regulation of Metabolism

Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
Introduction to Metabolism01:30

Introduction to Metabolism

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...
Metabolic States of the Body: The Postabsorptive State01:18

Metabolic States of the Body: The Postabsorptive State

The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Metabolic States of the Body: Fasting and Starvation01:24

Metabolic States of the Body: Fasting and Starvation

During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
Overview of Metabolism01:40

Overview of Metabolism

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.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...

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Related Experiment Video

Updated: Jun 6, 2026

Metabolic Analysis of Drosophila melanogaster Larval and Adult Brains
07:06

Metabolic Analysis of Drosophila melanogaster Larval and Adult Brains

Published on: August 7, 2018

Focus issue: metabolic signals.

Wei Wong

    Science Signaling
    |December 9, 2010
    PubMed
    Summary

    This study explores cellular control of metabolic processes. Key findings reveal new roles for insulin/IGF-1 receptors in apoptosis and lipids in glucose sensing.

    Area of Science:

    • Cellular Biology
    • Metabolism
    • Signaling Pathways

    Background:

    • Focuses on pathways and molecules controlling cellular metabolic processes.
    • Complements the Science Special Issue on Metabolism.

    Discussion:

    • Investigates the role of insulin receptor and IGF-1 receptor in triggering apoptosis.
    • Explores lipids as cellular sensors of glucose metabolism.
    • Examines mechanisms of cellular survival during oxidative stress.

    Key Insights:

    • Insulin and IGF-1 receptors have unexpected roles in apoptosis.
    • Lipids act as sensors for glucose metabolism.
    • Cells can adapt to oxidative stress by altering protein degradation.

    Outlook:

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    Visualizing Monocarboxylates and Other Relevant Metabolites in the Ex Vivo Drosophila Larval Brain Using Genetically Encoded Sensors

    Published on: October 27, 2023

    Related Experiment Videos

    Last Updated: Jun 6, 2026

    Metabolic Analysis of Drosophila melanogaster Larval and Adult Brains
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    Published on: August 7, 2018

    Visualizing Monocarboxylates and Other Relevant Metabolites in the Ex Vivo Drosophila Larval Brain Using Genetically Encoded Sensors
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    Visualizing Monocarboxylates and Other Relevant Metabolites in the Ex Vivo Drosophila Larval Brain Using Genetically Encoded Sensors

    Published on: October 27, 2023

    • Further research into metabolic control pathways.
    • Understanding the interplay between metabolism, apoptosis, and stress response.
    • Potential therapeutic targets for metabolic and stress-related diseases.