Energy source ENergy source are those nutrients that provide the initial Energy or ray radiation energy for its living The spectrum of energy source can be dividedinto two types: chemical material(organic or inorganic)and irradiation energy Chemotrophs use chemicalmaterials and phototroph se irradiation energy
Energy source are those nutrients that provide the initial energy or ray radiation energy for its living. The spectrum of energy source can be divided into two types: chemical material(organic or inorganic) and irradiation energy. Chemotrophs use chemical materials and phototrophs use irradiation energy. Energy source
A: certain nutrient might has two or three nutritional functions that is: it can be used as the source of carbon,::::nitrogen or energy,: while some: only have one function Monofunctional nutrient)--ray irradiation energy (单功能营养物 energy source Bifunctional nutrient)= deoxidized(还原态的) inorganic NH (双功能营养物 energy source and nitrogen source) Trifunctional nutrient)--amino acids ∈三功能营养物 source of carbon, nitrogen and energy)
Monofunctional nutrient)——ray irradiation energy （ 单功能营养物 energy source） Bifunctional nutrient)——deoxidized（还原态 的）inorganic NH4 (双功能营养物（energy source and nitrogen source） Trifunctional nutrient)——amino acids (三功能营养物 source of carbon， nitrogen and energy） A certain nutrient might has two or three nutritional functions，that is ,it can be used as the source of carbon， nitrogen or energy，while some only have one function
Growth factor Growth factor is a kind of organic material can't be self synthesized by auxotrophs(营养缺陷型微生物) with simple carbon source and nitrogen source, while is necessary for microorganisms to regulate the normal metabolism. Although growth factor is an important nutrient element it is differentfrom the carbon source energy source and nitrogen, source in that not any certain organism need the growth factor provided by the enyironment
Growth factor Growth factor is a kind of organic material can’t be self - synthesized by auxotrophs(营养缺陷型微生物) with simple carbon source and nitrogen source, while is necessary for microorganisms to regulate the normal metabolism. Although growth factor is an important nutrient element, it is different from the carbon source , energy source and nitrogen source in that not any certain organism need the growth factor provided by the environment
Prototrophs Bacteria that can synthesize all they require from these basic ingredients are called prototrophs(原养型微生物) and most microorganisms that survive in the outside environment can do this Microbes that have become adapted to life in a situation rich with nutrients such as the human body may require other growth factors to be provided, such as vitamins amino acids or nitrogenous bases. these organisms are called auxotrophs(营养缺陷型) Leuconostoc mesenteroides, for exam ple, requires over 40 additional growth factors. Bacterial growth media are therefore designed to suit the organism of interest and may be either defined or com plex media auxotrophs
Bacteria that can synthesize all they require from these basic ingredients are called prototrophs（原养型微生物） and most microorganisms that survive in the outside environment can do this. Prototrophs Microbes that have become adapted to life in a situation rich with nutrients such as the human body may require other growth factors to be provided, such as vitamins, amino acids or nitrogenous bases. These organisms are called auxotrophs（营养缺陷型）. Leuconostoc mesenterdides, for example, requires over 40 additional growth factors. Bacterial growth media are therefore designed to suit the organism of interest and may be either defined or complex media. auxotrophs
Microbes can be divided into three types on the basis of situation of e the need for growth factor: sone Auxoheterotrophs(生长因子异养性微生物) B Auxoautotrophs(生长因子自养性微生物) Growth factor over synthesized microbes(生长因子过量 的合成的微生物)
Microbes can be divided into three types on the basis of situation of the need for growth factor: Auxoheterotrophs(生长因子异养性微生物) Auxoautotrophs (生长因子自养性微生物) Growth factor over synthesized microbes(生长因子过量 合成的微生物)