Energy Carbon Sources
Energy Carbon Sources - Related Videos
01:14
The Carbon Cycle
0 Views •
2019
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle. Biological Carbon Cycle All...
01:21
Free Energy
0 Views •
2019
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 down the...
11:14
Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
0 Views •
Cited by 6 •
2017
A protocol for the parallel production of precipitated calcium carbonate and zeolitic material from blast furnace slag via mineral carbonation and alkaline hydrothermal conversion, respectively, is presented. The performance of the zeolitic material towards nickel adsorption is tested.
07:50
Open-source Toolkit: Benchtop Carbon Fiber Microelectrode Array for Nerve Recording
0 Views •
Cited by 10 •
2021
Here, we describe fabrication methodology for customizable carbon fiber electrode arrays for recording in vivo in nerve and brain.
02:00
Internal Energy
0 Views •
2020
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial. Although the values for Ufinal and Uinitial cannot be determined for a system, the first law of thermodynamics only...
FAQs
Energy inputs drive metabolic work, whereas carbon inputs provide material for building cellular components. An organism may capture energy from light or chemical oxidation while acquiring carbon from carbon dioxide or organic molecules. Separating these roles helps explain how metabolism connects energy capture with biosynthesis and why organisms can occupy different physiological and ecological niches.
Phototrophs initiate energy capture through light, while chemotrophs obtain energy through chemical oxidation. This distinction describes the first stage of how usable energy enters metabolism, rather than specifying the organism’s carbon source. Examining energy acquisition alongside carbon use therefore gives a more complete view of an organism’s physiology and metabolic strategy.
Autotrophs use inorganic carbon, such as carbon dioxide, whereas heterotrophs obtain carbon from organic molecules. This classification focuses on the material incorporated into cellular components, not on how energy is captured. Considering both dimensions helps connect carbon assimilation to growth and clarifies how organisms contribute to nutrient movement through biological systems.
Energy capture alone does not produce growth unless its products support the formation of cellular components. Metabolic pathways couple the energy obtained from light or chemical oxidation to biosynthetic processes that use carbon-containing materials. This coupling explains how environmental energy and carbon inputs become organized into the cellular structures required to sustain an organism.
Researchers can first identify whether the organism obtains energy from light or chemical oxidation, then determine whether its carbon comes from inorganic carbon or organic molecules. Combining those observations places the organism within the phototroph or chemotroph and autotroph or heterotroph frameworks. The resulting profile summarizes its metabolic strategy without treating energy and carbon as the same resource.
Comparing energy and carbon sources helps researchers interpret microbial physiology, including how organisms support metabolism and growth under different environmental conditions. The same framework also provides context for environmental adaptation because available light, chemical energy, inorganic carbon, and organic molecules influence which metabolic strategies can operate. These relationships help explain microbial diversity across ecosystems.
This framework supports studies of ecosystem nutrient cycling, industrial fermentation, and sustainable biotechnology. In environmental research, it helps relate microbial metabolism to biogeochemical cycles. In applied settings, identifying how organisms obtain energy and carbon can guide interpretation of microbial growth and metabolism, making these source categories useful for connecting biological function with technological or ecological outcomes.