2 (1)Goldsmiths blow the outermost zone of a flame with a metallic blow-pipe for melting gold and silver. Why do they use the outermost zone of the flame? (1 marks)
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The several proteolytic enzymes present in the GIT include endopeptidases (trypsin, chymotrypsin, and elastase) and exopeptidases (carboxypeptidase A and aminopeptidase). These proteolytic enzymes are regarded as extracellular barriers and are involved in the degradation of peptides and proteins.
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Goldsmiths blow the outer most zone of a flame in order to melt gold or silver because the outermost zone is a zone of complete combustion, also known as luminous zone. The ignition temperature of this zone is the highest and thus helps in melting the metal the best in order to creat desired designs or patterns.
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