Video Experimental Relacionado

Updated: Jul 5, 2026

Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology
10:43

Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology

Published on: November 5, 2014

Óxido nítrico en el agua de mar

O C Zafiriou, M McFarland, R H Bromund

    Science (New York, N.Y.)
    |February 8, 1980
    PubMed
    Resumen

    La fotólisis del nitrito en el agua de mar genera óxido nítrico (NO). Este NO circula rápidamente, lo que indica la presencia de otros radicales libres del agua de mar y hace que el Océano Pacífico sea una fuente de NO para la atmósfera.

    Más Videos Relacionados

    Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies10:44

    Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

    Published on: July 1, 2016

    Preparation of Free-Surface Hyperbolic Water Vortices04:35

    Preparation of Free-Surface Hyperbolic Water Vortices

    Published on: July 28, 2023

    Videos de Conceptos Relacionados

    Redox Reactions01:24

    Redox Reactions

    Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
    Redox Reactions01:27

    Redox Reactions

    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...
    Anoxygenic Photosynthesis01:30

    Anoxygenic Photosynthesis

    Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green sulfur bacteria, heliobacteria, and...
    Metabolism of Chemolithotrophs01:15

    Metabolism of Chemolithotrophs

    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. However, because inorganic electron donors...
    Oxygenic Photosynthesis01:26

    Oxygenic Photosynthesis

    Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate light...
    Marine Microbial Ecology01:30

    Marine Microbial Ecology

    Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...