Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Cell Potential and Free Energy02:58

Cell Potential and Free Energy

46.7K
Thermodynamics of a Redox Reaction
Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
Thus, a link can be predicted between cell potential, free energy change, and the equilibrium constant for the reaction. Cell potential can also be measured as the oxidant or the reducing strength, and similar acid-base strength measures are reflected in equilibrium...
46.7K
Free Energy01:21

Free Energy

52.3K
Free energy—abbreviated as G for the scientist Gibbs who discovered it—is a measurement of useful energy that can be extracted from a reaction to do work. It is the energy in a chemical reaction that is available after entropy is accounted for. Reactions that take in energy are considered endergonic and reactions that release energy are exergonic. Plants carry out endergonic reactions by taking in sunlight and carbon dioxide to produce glucose and oxygen. Animals, in turn, break...
52.3K
What is Energy?04:10

What is Energy?

59.6K
The universe is composed of matter in different forms, and all forms of matter contain energy.  The different forms of energy on Earth originate from the Sun — the ultimate energy source. Plants capture light energy from the Sun, and, via the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal (fossilized...
59.6K
Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

4.9K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
4.9K
Potential Energy00:52

Potential Energy

42.9K
The energy stored by a structure and location of matter in space is called potential energy. For instance, raising a kettlebell changes its spatial location and increases its potential energy. Similarly, a stretched rubber band contains potential energy which, under certain conditions, can be converted into other forms of energy, such as kinetic energy.
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
42.9K
Activation Energy01:26

Activation Energy

87.1K
Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...
87.1K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

State-dependent energy conversion produces degenerate dissipation in active actomyosin networks.

bioRxiv : the preprint server for biology·2026
Same author

Hollow micro-/nanostructures for enhanced pathogen theranostics.

Chemical Society reviews·2026
Same author

The fourfold way to rupture in active solids.

Nature materials·2026
Same author

Crosslinked F-actin networks regulate load-dependent energy conversion.

Communications biology·2026
Same author

Topological control of spontaneous failure in active nematic solids.

Nature materials·2026
Same author

Advances in BRET probes for intracellular target engagement studies.

Nature chemical biology·2026

Video Experimental Relacionado

Updated: Feb 13, 2026

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins
11:11

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins

Published on: June 15, 2018

8.8K

Partición de energía en la corteza celular

Sheng Chen1,2, Daniel S Seara2,3,4, Ani Michaud5,6

  • 1Department of Biomedical Engineering, Yale University, New Haven, CT, USA.

Nature physics
|February 12, 2026
PubMed
Resumen

Las células particionan la energía entre actividades químicas y mecánicas en la corteza celular. Esta partición sigue principios termodinámicos, pero se descompone a medida que las células se vuelven más activas, lo que afecta el comportamiento celular.

Palabras clave:
corteza celulartermodinámicapartición de energíapatrones celularesondas químicasondas mecánicasreciprocidad de Onsagerbiología celularbiofísica

Más Videos Relacionados

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS
10:59

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS

Published on: April 6, 2012

16.7K
Herbs-Partitioned Moxibustion on the Navel in a Rat Model of Primary Dysmenorrhea with Cold Coagulation and Blood Stasis
05:36

Herbs-Partitioned Moxibustion on the Navel in a Rat Model of Primary Dysmenorrhea with Cold Coagulation and Blood Stasis

Published on: October 4, 2024

1.2K

Videos de Experimentos Relacionados

Last Updated: Feb 13, 2026

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins
11:11

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins

Published on: June 15, 2018

8.8K
Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS
10:59

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS

Published on: April 6, 2012

16.7K
Herbs-Partitioned Moxibustion on the Navel in a Rat Model of Primary Dysmenorrhea with Cold Coagulation and Blood Stasis
05:36

Herbs-Partitioned Moxibustion on the Navel in a Rat Model of Primary Dysmenorrhea with Cold Coagulation and Blood Stasis

Published on: October 4, 2024

1.2K

Área de la Ciencia:

  • Biología celular
  • Biofísica
  • Termodinámica

Sus antecedentes:

  • Los sistemas vivos consumen energía para mantener el orden lejos del equilibrio termodinámico.
  • Los patrones celulares en actividades químicas y mecánicas son cruciales para los fenotipos y comportamientos celulares.
  • El mecanismo de partición de energía intracelular sigue siendo poco comprendido.

Objetivo del estudio:

  • Investigar cómo las células particionan la energía interna entre actividades químicas y mecánicas en la corteza celular.
  • Determinar la relación entre la partición de energía, el equilibrio termodinámico y los patrones celulares.
  • Explorar el papel de la vía Rho GTPasa en la regulación de la dinámica energética cortical.

Principales métodos:

  • Medición de las tasas de producción de entropía en los subsistemas químico y mecánico de la corteza celular.
  • Manipulación de la vía Rho GTPasa para inducir diversos patrones corticales (pulsos, ondas entrecortadas, ondas laberínticas/espirales).
  • Análisis de la reciprocidad de Onsager y la partición de energía en diferentes dinámicas de patrones.

Principales resultados:

  • La energía se particiona proporcionalmente entre los subsistemas químico y mecánico bajo la reciprocidad de Onsager en niveles de actividad más bajos (ondas entrecortadas).
  • La tasa de producción de entropía se maximiza en ondas entrecortadas dentro del rango de reciprocidad.
  • La reciprocidad se rompe y la partición de energía se vuelve diferencial a medida que la corteza forma ondas laberínticas o espirales, desacoplando las actividades químicas y mecánicas.
  • La partición de energía y la reciprocidad se rigen por la interacción entre las escalas de tiempo de la reacción química y la relajación mecánica.

Conclusiones:

  • La partición de energía celular se regula dinámicamente y depende de la proximidad del sistema al equilibrio termodinámico.
  • La ruptura de la reciprocidad de Onsager significa un cambio en las estrategias de utilización de energía a medida que aumenta la actividad celular.
  • El equilibrio entre las escalas de tiempo químicas y mecánicas dicta cómo las células gestionan la energía para la formación y función de patrones.