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  2. Countercurrent exchange - Wikipedia

    en.wikipedia.org/wiki/Countercurrent_exchange

    Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some chemical, between two flowing bodies flowing in opposite directions to each other. The flowing bodies can be liquids, gases, or even solid powders, or any combination of those.

  3. Countercurrent multiplication - Wikipedia

    en.wikipedia.org/wiki/Countercurrent_multiplication

    A countercurrent mechanism system is a mechanism that expends energy to create a concentration gradient.. It is found widely in nature and especially in mammalian organs. For example, it can refer to the process that is underlying the process of urine concentration, that is, the production of hyperosmotic urine by the mammalian kidn

  4. Syntrophy - Wikipedia

    en.wikipedia.org/wiki/Syntrophy

    Syntrophy is often used synonymously for mutualistic symbiosis especially between at least two different bacterial species. Syntrophy differs from symbiosis in a way that syntrophic relationship is primarily based on closely linked metabolic interactions to maintain thermodynamically favorable lifestyle in a given environment.

  5. List of types of equilibrium - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_equilibrium

    Thermal equilibrium, a state where an object and its surroundings cease to exchange energy in the form of heat, i.e. they are at the same temperature; Donnan equilibrium, the distribution of ion species between two ionic solutions separated by a semipermeable membrane or boundary

  6. Bioenergetics - Wikipedia

    en.wikipedia.org/wiki/Bioenergetics

    Bioenergetics is a field in biochemistry and cell biology that concerns energy flow through living systems. [1] This is an active area of biological research that includes the study of the transformation of energy in living organisms and the study of thousands of different cellular processes such as cellular respiration and the many other metabolic and enzymatic processes that lead to ...

  7. Thermal neutral zone - Wikipedia

    en.wikipedia.org/wiki/Thermal_neutral_zone

    In horses, the lower critical temperature is 5 °C while the upper critical temperature depends on the definition used. [11] Their thermoneutral zone is roughly 5–30 °C (41–86 °F). [12] In mice, the lower critical temperature and upper critical temperature can be the same, creating a thermoneutral point instead of a thermoneutral zone.

  8. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

    www.aol.com/5-items-1970s-worth-lot-170007423.html

    Hamas approves Israeli list of hostages for potential exchange: Reuters. News. The Weather Channel. Winter Storm Blair live updates: Blizzard warning extended into Kansas City. Sports.

  9. Biological interaction - Wikipedia

    en.wikipedia.org/wiki/Biological_interaction

    The black walnut secretes a chemical from its roots that harms neighboring plants, an example of competitive antagonism.. In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other.