Question
Biology Question on Microbes in human welfare
Give examples to prove that microbes release gases during metabolism.
Answer
(a) Bacteria and fungi carry out the process of fermination and during this process they release carbon dioxide. Fermination is the process of converting a complex organic substance into a simpler substance with the action of bacteria or yeast. Fermination of sugar produces alcohol with the release of carbon dioxide and very little energy.
Glucose→without oxygen alcohol+energy+CO2
(b) The dough used for making idli and dosa gives a puffed experience. This is because of the action of bacteria which releases carbon dioxide. This CO2 released from the dough gets trapped in the dough thereby giving it a puffed appearance.