Search results
Results from the WOW.Com Content Network
The free radical theory of aging states that organisms age because cells accumulate free radical damage over time. [1] A free radical is any atom or molecule that has a single unpaired electron in an outer shell. [2] While a few free radicals such as melanin are not chemically reactive, most biologically relevant free radicals are highly ...
For example, Tokunagayusurika akamusi is a species of midge fly whose larvae live as obligate scavengers at the bottom of lakes and whose adults almost never feed and only live up to a few weeks. Most scavenging animals are facultative scavengers that gain most of their food through other methods, especially predation .
Zingerone is recognized as being a particularly efficient free radical scavenger. It is able to scavenge and degrade free radicals and reactive oxygen species in the body, and inhibits enzymes involved in the generation of these reactive oxygen species.
A category for scavenging animals. See also carrion. Subcategories. ... Pages in category "Scavengers" The following 32 pages are in this category, out of 32 total.
Tocopherols are radical scavengers, delivering an H atom to quench free radicals. At 323 kJ/mol, the O–H bond in tocopherols is approximately 10% weaker than in most other phenols . [ 14 ] This weak bond allows the vitamin to donate a hydrogen atom to the peroxyl radical and other free radicals , minimizing their damaging effect.
They are the largest birds in this family. Both extant species in the genus are native to the Southern Hemisphere. Giant petrels are extremely aggressive predators and scavengers, inspiring another common name, the stinker. [2] Seamen and whalers also referred to the giant petrel as the molly-hawk, gong, glutton bird and nelly. [3]
Despite being commonly depicted as vulture-like scavengers, the cranial anatomy of teratorns indicates that they were active predators built to swallow prey whole. Consequently, Merriam's teratorn would have likely preyed on animals such as frogs, lizards, small birds and rodents. [102] Teratornis skeleton: Turkey vulture [71] [33] Cathartes aura
Vitamin E is a free radical scavenger that functions as a chain-breaking antioxidant to prevent free radical damage of cell membranes. [ 92 ] [ 99 ] Vitamin E aids in protecting cells from highly reactive oxygen species within the lungs, muscles, skin, brain, tissues and red blood cells. [ 100 ]