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Question 1: ttacterin Kerms. Commerciais that advert rmine rid of them commonry thought to be nks that Rerm" order to are en en cvo on and the pul cause disease, be clean and healthy. in d Rerm is Rood germ. while some ot the discuss w example the categories bclaw, and cite and harmful prooesses that mKraars a few volved in a. earth's ecology 2 examples human ecology 2 examples. Pure research use-2 exam Medical uses 2 exam pics e. Food uses 2 examples f, Genomics use 2 examples g. Agricultural use 2 examples

Explanation / Answer

Ans. A. Earth’s Ecology:

Cyanobacteria- N2 fixation and part of N-cycle

            Methanogens – Methane production.

N2 and CH4 are abiotic components of the ecosystem. So, bacteria participating their metabolism also play roles in earth’s ecosystem.

#B. Human Ecology:

E. coli – normal microflora of gut

            Lactobacillus species as normal microflora of female reproductive tract help maintaining acid pH.

#C. Pure research is the scientific study/ research to understand/ improve basic natural processes/ phenomenon.

E. coli – Used to study fundamental metabolic pathways

Synechocystis – Used to study photosynthesis         

#D. Medical use:

            Streptomyces griseus – Source of antibiotic Streptomycin

            E. coli – Production of recombinant Insulin

#E. Food Use:

            Lactobacillus: Fermentation of milk into curd

Propionibacter shermani – Production of Swiss starter cheese

#F. Genomic use:

            Thermus aquaticus: Source of Taq polymerase

            E. coli – Source of restriction enzyme, EcoR1

#G. Agricultural use

            Bacillus thuringiensis – Used as bio pesticide

            Rhizobium: Used as biofertilizer (fixes N2 in roots of many crops)

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