Biology li ll n

isolak'd ,11 nanisms

Isolation methods utilizing selection of the desired characteristic

,bi- -lvik-ii wc consider methods which take ■t ulv.iiii.iL.'c -f the industrially relevant property

I bit -J l'iv .ui oh'.inism to isolate that organism from ".V'nvuon.iK-m.il source. Isolation methods depending ,',„ ill ■ use .'I Lk-.ii.ible characteristics as selective factor- .lie <.--cMii.ili\ lypes of enrichment culture. Enrichment' culmtc i- .i technique resulting in an increase in i he iiumiKi ol a given organism relative to the number- ol oilier types in the original inoculum. The process involve- i.iking a mixed population and providing con-dnii'ii- en her suitable for the growth of the desired t\|v. oi unsuitable for the growth of the other organism-. c.n. by the provision of particular substrates or iho inclusion of certain inhibitors. Prior to the culture suae n i- often advantageous to subject the environmental source (normally soil) to conditions which favour the -uiv iv,i 1 of the organisms in question. For example, aii-Jrviiig the soil will favour the survival of acti-

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Metabolism. There isn’t perhaps a more frequently used word in the weight loss (and weight gain) vocabulary than this. Indeed, it’s not uncommon to overhear people talking about their struggles or triumphs over the holiday bulge or love handles in terms of whether their metabolism is working, or not.

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