enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Biological functions of hydrogen sulfide - Wikipedia

    en.wikipedia.org/wiki/Biological_functions_of...

    Animals and humans naturally produce some hydrogen sulfide in their body; researchers have proposed that the gas is used to regulate metabolic activity and body temperature, which would explain the above findings. [18] Two recent studies cast doubt that the effect can be achieved in larger mammals.

  3. Catabolism - Wikipedia

    en.wikipedia.org/wiki/Catabolism

    Catabolism is the breaking-down aspect of metabolism, whereas anabolism is the building-up aspect. Cells use the monomers released from breaking down polymers to either construct new polymer molecules or degrade the monomers further to simple waste products, releasing energy.

  4. Catabolysis - Wikipedia

    en.wikipedia.org/wiki/Catabolysis

    Catabolysis is a biological process in which the body breaks down fat and muscle tissue in order to stay alive. Catabolysis occurs only when there is no longer any source of protein, carbohydrate, or vitamin nourishment feeding all body systems; it is the most severe type of malnutrition.

  5. Lipolysis - Wikipedia

    en.wikipedia.org/wiki/Lipolysis

    In the body, stores of fat are referred to as adipose tissue. In these areas, intracellular triglycerides are stored in cytoplasmic lipid droplets . When lipase enzymes are phosphorylated, they can access lipid droplets and through multiple steps of hydrolysis, breakdown triglycerides into fatty acids and glycerol.

  6. Fatty acid metabolism - Wikipedia

    en.wikipedia.org/wiki/Fatty_acid_metabolism

    This means that fatty acids can hold more than six times the amount of energy per unit of stored mass. Put another way, if the human body relied on carbohydrates to store energy, then a person would need to carry 31 kg (67.5 lb) of hydrated glycogen to have the energy equivalent to 4.6 kg (10 lb) of fat. [10]

  7. Free radical damage to DNA - Wikipedia

    en.wikipedia.org/wiki/Free_radical_damage_to_DNA

    This produces a double-strand break in the DNA, which can lead to cellular apoptosis if not repaired. Enediynes generally undergo the Bergman cyclization at temperatures exceeding 200 °C. However, incorporating the enediyne into a 10-membered cyclic hydrocarbon makes the reaction more thermodynamically favorable by releasing the ring strain of ...

  8. Carbohydrate metabolism - Wikipedia

    en.wikipedia.org/wiki/Carbohydrate_metabolism

    When animals and fungi consume plants, they use cellular respiration to break down these stored carbohydrates to make energy available to cells. [2] Both animals and plants temporarily store the released energy in the form of high-energy molecules, such as adenosine triphosphate (ATP), for use in various cellular processes.

  9. Radioactive tracer - Wikipedia

    en.wikipedia.org/wiki/Radioactive_tracer

    67 Ga is used because, like 99m Tc, it is a gamma-ray emitter and various ligands can be attached to the Ga 3+ ion, forming a coordination complex which may have selective affinity for particular sites in the human body. An extensive list of radioactive tracers used in hydraulic fracturing can be found below.