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प्रश्न
Give reasons.
Bread 'rises' during baking.
उत्तर
Bread rises during baking because of the addition of yeast to its dough. Yeast cells respire anaerobically and liberate CO2 in the process. When yeast cells are added to the bread dough, they utilise the nutrients (carbohydrates) found in the dough and respire anaerobically. Also, they multiply at a very fast rate under such favourable conditions. As a result of the growing bacterial population, a large amount of CO2 is released that makes the dough very soft and fluffy and thus improves the quality of the bread.
संबंधित प्रश्न
A) Lack of management of which factor is shown in the picture?
B) How can that factor be managed with the help of microbes?
C) How the oil spills in oceans are cleared?
There is a oil layer on the water surface of river in your area. What will you do ?
Complete the paragraph using proper words:
(Mechanical, Rhizobium, Aquatic, Toxic, CO2, Nitrogen, Pseudomonas, Amoeba, Bacteria, Hydrocarbons)
Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to _______ organisms. It is not easy to remove the oil layer from surface of water by _______ method. However, bacteria like _______ spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these _______ are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the _______ and bring about the reaction of carbon with oxygen. _______ and water is formed in this process.
Give scientific reason.
A biofuel is an important tool in renewable energy sources.
Which fuels do we get from microbes?
What is the use of antibiotics to human and other animals?
Diptheria affects the ______.
What is retting?
Baker’s yeast is ______.
In the process of making bread the carbohydrates in the flour are fermented by baker's yeast and sugar is transformed into carbon dioxide and ______.
