Jove
Visualize
Contact Us

Related Concept Videos

Cellular Respiration01:18

Cellular Respiration

1.8K
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...
1.8K
Respiration01:24

Respiration

4.1K
Overview of the Respiratory System and Energy Production
Energy production in the human body is primarily fueled by oxidation, a process where food molecules are burned by combining with oxygen to produce carbon dioxide and water. This vital metabolic process sustains life, and is supported intricately by the respiratory system.
Structure and Function of the Respiratory System:
The respiratory system is a complex network of structures that includes the nose, oropharynx, larynx, trachea,...
4.1K
Chemical Factors Affecting Respiration Centers01:31

Chemical Factors Affecting Respiration Centers

2.1K
Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated....
2.1K
Chemiosmosis01:32

Chemiosmosis

113.9K
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
113.9K
External and Internal Respiration01:24

External and Internal Respiration

7.1K
External respiration occurs in the lungs, and it is the first step in the journey of oxygen inside the body. When we inhale, oxygen enters our lungs and diffuses across the thin alveolar membrane. The alveoli are tiny, air-filled sacs that provide a vast surface area for gas exchange. Oxygen in the alveoli has a higher partial pressure (105 mmHg) than in the adjacent pulmonary capillaries (40 mmHg), establishing a pressure gradient. As a result, oxygen molecules move from the alveoli into the...
7.1K
Alterations in Respiration II01:30

Alterations in Respiration II

1.7K
There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
1.7K

You might also read

Related Articles

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

Sort by
Same author

The green algae CO<sub>2</sub> concentrating mechanism and photorespiration jointly operate during acclimation to low CO<sub>2</sub>.

Nature communications·2025
Same author

Ultra pure high molecular weight DNA from soil for Nanopore shotgun metagenomics and metabarcoding sequencing.

MethodsX·2025
Same author

Cyclic and pseudo-cyclic electron pathways play antagonistic roles during nitrogen deficiency in Chlamydomonas reinhardtii.

Plant physiology·2024
Same author

The DYRKP1 kinase regulates cell wall degradation in Chlamydomonas by inducing matrix metalloproteinase expression.

The Plant cell·2024
Same author

Bestrophin-like protein 4 is involved in photosynthetic acclimation to light fluctuations in Chlamydomonas.

Plant physiology·2024
Same author

Absence of alka(e)nes triggers profound remodeling of glycerolipid and carotenoid composition in cyanobacteria membrane.

Plant physiology·2024
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 Experiment Video

Updated: Jan 19, 2026

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool
04:22

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool

Published on: April 28, 2023

1.3K

Chlororespiration.

Gilles Peltier1, Laurent Cournac

  • 1Laboratoire d'Ecophysiologie de la Photosynthèse, Département d'Ecophysiologie Végétale et de Microbiologie, UMR 163 CNRS-CEA, Université Mediterranée, CEA 1000, F-13108 Saint-Paul-lez-Durance, France. gilles.peltier@cea.fr

Annual Review of Plant Biology
|September 14, 2002
PubMed
Summary

Chlororespiration, a pathway in chloroplasts, involves electron transport chains interacting with photosynthesis. Key proteins like NDH and PTOX support its function, potentially regulating photosynthesis and bioenergetics in plastids.

More Related Videos

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis
10:46

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis

Published on: December 9, 2022

2.4K
High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers
09:53

High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers

Published on: October 26, 2021

5.5K

Related Experiment Videos

Last Updated: Jan 19, 2026

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool
04:22

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool

Published on: April 28, 2023

1.3K
Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis
10:46

Evaluation of Photosynthetic Efficiency in Photorespiratory Mutants by Chlorophyll Fluorescence Analysis

Published on: December 9, 2022

2.4K
High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers
09:53

High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers

Published on: October 26, 2021

5.5K

Area of Science:

  • Plant Physiology
  • Photosynthesis Research
  • Chloroplast Bioenergetics

Background:

  • Chlororespiration, a respiratory electron transport chain (ETC) interacting with the photosynthetic ETC in thylakoid membranes, has been a subject of debate.
  • Initial evidence was challenged by potential redox interactions between chloroplasts and mitochondria.
  • The discovery of plastid-encoded NAD(P)H-dehydrogenase (Ndh) and nuclear-encoded plastid terminal oxidase (PTOX) provided molecular support for chlororespiration.

Purpose of the Study:

  • To investigate the functionality of NDH and PTOX in chlororespiration.
  • To elucidate the role of chlororespiration in mature chloroplasts and non-photosynthetic plastids.
  • To explore the potential regulatory role of chlororespiration in photosynthesis.

Main Methods:

  • Demonstration of the functionality of NDH and PTOX in non-photochemical reduction and oxidation of plastoquinones (PQs).
  • Comparative analysis of chlororespiration's abundance and role in mature photosynthetic chloroplasts versus non-photosynthetic plastids.

Main Results:

  • The functionality of NDH and PTOX in plastoquinone redox reactions has been confirmed.
  • Chlororespiration is a minor pathway in mature chloroplasts compared to linear photosynthetic electron flow.
  • Chlororespiratory electron carriers are more abundant and potentially play a significant bioenergetic role in non-photosynthetic plastids.

Conclusions:

  • Chlororespiration, supported by NDH and PTOX, is a functional pathway in plants.
  • It may play a role in regulating photosynthesis, particularly cyclic electron flow around photosystem I.
  • Chlororespiration is likely more significant bioenergetically in non-photosynthetic plastids.