Artificial sweeteners give you the sweet taste of sugar without its calories and without raising your blood glucose levels. Depending on the brand used, one packet will usually give the same sweetness as two teaspoons of table sugar. There are two classes of artificial sweeteners: noncaloric (non-nutritive) and caloric (nutritive). Non-caloric sweeteners, such as aspartame, acesulfame-K, sucralose, and saccharin, do not raise blood glucose. Caloric sweeteners, such as sorbitol, mannitol, and xylitol, are sugar alcohols. They have calories and are absorbed into the blood, although more slowly.
Coesite is a very rare mineral that forms in unique ultra high metamorphism usually as a result of meteorite impacts. It was named after American chemist Loring Coes, Jr. (1915-1978), who first synthesized Coesite in 1953 before it was naturally discovered in Barringer Crater in 1960.
2. parasitic fetus. accidental parasite one that parasitizes an organism other than the usual host. facultative parasite one that may be parasitic upon another organism but can exist independently. incidental parasite accidental parasite.malarial parasite Plasmodium. obligate parasite (obligatory parasite) one that is entirely dependent upon a host for its survival.arasite. a plant or animal that lives upon or within another living organism at whose expense it obtains some advantage. See also symbiosis. Among the many parasites in nature, some feed upon animal hosts, causing diseases ranging from the mildly annoying to the severe and often fatal.