Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Redox Reactions01:27

Redox Reactions

219
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
219
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

1.1K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.1K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

7.8K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
7.8K
Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

188
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
188
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

408
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
408
Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

3.5K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
3.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Influence of Artificial Light at Night on Thyroid Gland Histology in <i>Triturus</i> Newts (Urodela, Salamandridae).

Animals : an open access journal from MDPI·2026
Same author

Inhibitory Activity of LDT10 and LDT119, New Saturated Cardanols, Against <i>Trypanosoma cruzi</i>.

Pharmaceuticals (Basel, Switzerland)·2026
Same author

Redox Metabolism During Aerial Exposure of the Sea Urchin <i>Echinometra lucunter</i>: An Ecophysiological Perspective.

Animals : an open access journal from MDPI·2025
Same author

Enhancing Antimicrobial Peptides from Frog Skin: A Rational Approach.

Biomolecules·2025
Same author

Suppression of the postprandial hyperglycemia in patients with type 2 diabetes by a raw medicinal herb powder is weakened when consumed in ordinary hard gelatin capsules: A randomized crossover clinical trial.

PloS one·2024
Same author

The challenges, opportunities and future of comparative physiology in the Global South: perspectives of early-career researchers.

The Journal of experimental biology·2024

Related Experiment Video

Updated: Sep 18, 2025

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein
06:10

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Published on: June 18, 2020

7.4K

Redox Metabolism in Ecophysiology and Evolution, 2nd Edition.

Marko D Prokić1, Marcelo Hermes-Lima2, Daniel C Moreira3

  • 1Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.

Antioxidants (Basel, Switzerland)
|June 26, 2025
PubMed
Summary

Organisms evolved by managing reactive oxygen and nitrogen species (RONS) and redox pathways. This control over oxidative stress is crucial for cellular function and survival.

More Related Videos

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
10:24

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

Published on: June 7, 2018

8.8K
Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher
08:09

Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher

Published on: August 16, 2024

5.1K

Related Experiment Videos

Last Updated: Sep 18, 2025

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein
06:10

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Published on: June 18, 2020

7.4K
Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
10:24

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

Published on: June 7, 2018

8.8K
Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher
08:09

Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher

Published on: August 16, 2024

5.1K

Area of Science:

  • Biochemistry
  • Evolutionary Biology
  • Cellular Biology

Background:

  • Organisms possess intricate mechanisms to regulate reactive oxygen and nitrogen species (RONS).
  • Pro-oxidant activity management and redox pathway utilization are key evolutionary drivers.
  • Understanding these redox processes is fundamental to comprehending life's development.

Discussion:

  • The regulation of RONS production and activity impacts cellular signaling and damage.
  • Redox homeostasis is essential for maintaining organismal health and adaptation.
  • Evolutionary pressures have shaped diverse strategies for managing oxidative stress.

Key Insights:

  • RONS regulation is a cornerstone of evolutionary adaptation.
  • Mastery of redox pathways confers a significant survival advantage.
  • Cellular redox balance is critical for complex life.

Outlook:

  • Further research into RONS metabolism can reveal novel therapeutic targets.
  • Investigating redox adaptations may illuminate extraterrestrial life possibilities.
  • Comparative studies of redox systems across species will deepen evolutionary insights.