1 Obligate aerobes: They have absolute requirement for oxygen in order to grow. 2  Psuedomonas aeruginosa, Mycobacterium tuberculosis. 3  Anaerobes: Usually can not grow in the presence of oxygen. 4  Obligate anaerobes: These bacteria grow only under condition of high reducing intensity and for which oxygen is toxic.
Wild yam is a plant. It contains a chemical, diosgenin, which can be made in the laboratory into various steroids, such as estrogen and dehydroepiandrosterone (DHEA). The root and the bulb of the plant are used as a source of diosgenin, which is prepared as an âextract,â a liquid that contains concentrated diosgenin.
Wild yam is a perennial vine; the long, slender, knotted, contorted, woody, tuberous rootstock is crooked and laterally branched and twining stems. Broadly ovate and cordate, the heart-shaped, leaves are from 2-6 inches long and about three-fourths as wide, glabrous on top, and finely fairy underneath on long stems.arning. Fresh plant may induce vomiting and other undesirable side effects. In using, do not confuse oriental tonic wild yams. Care should be taken when using this herb if there is an excess of mucous or congestion in the body.