cx-Microbes-in-Human-Welfare-Transformed-Slides-Full-edited

<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxbmicrobes-in-human-welfarebsuccess-108"><Success style="float:center;text-align:center;font-size:28px;"><b>MICROBES IN HUMAN WELFARE</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questions-b-primary-1"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS </b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>Aerobic degradation is more important than anaerobic degradation for the treatment of large volumes of wastewater rich in organic matter because:<br>
i) By aerobic degradation, the major part of the organic sludge is digested in the wastewater<br>
ii) After the aerobic degradation of the decomposers, they get separated along with the organic matter, which is rich in nutrients.<br>
iii) Biological oxygen demand (BOD) is reduced during aerobic degradation, which makes the water more suitable for aquatic organisms.<br>
iv) Activated sludge is produced in aerobic degradation that produces gases like methane and carbon dioxide, which are the main constituents of the biogas.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxbmicrobes-in-human-welfarebsuccess-110"><Success style="float:center;text-align:center;font-size:28px;"><b>MICROBES IN HUMAN WELFARE</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questions-b-primary-3"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS </b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>(a) The Ministry of Environment and Forests, Government of India, has initiated two plans:<br>
i. Ganga Action Plan<br>
ii. Yamuna Action Plan<br>
These plans were planned to involve a large number of sewage treatment plants. Ganga and Yamuna are very important rivers in terms of flora and fauna and as a tourist and religious attraction spot.</p>
<p>(b) The river Ganga is the largest river in India which covers a total distance of approximately 2520 km across India and Bangladesh, and it provides the habitat for more than 140 different species of fish and about 90 different species of amphibians and many endangered species. So, the river Ganga is considered as the largest river and requires to be free from pollution.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxbmicrobes-in-human-welfarebsuccess-116"><Success style="float:center;text-align:center;font-size:28px;"><b>MICROBES IN HUMAN WELFARE</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questions-b-primary-9"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS </b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>a) The Biological Oxygen Demand (BOD) will get higher, which would lead to the death of organisms such as fish due to the low availability of oxygen in the water. Waterborne diseases like cholera and dysentery, as people drink water directly from the river will be spread.</p>
<p>b) Anaerobic sludge digestion is important in sewage treatments because it decreases the Biological Oxygen Demand (BOD) and the sludge digestion occurs in the presence of anaerobic bacteria, and when the sludge is digested, the anaerobic bacteria release a mixture of gases like methane(CH3), carbon dioxide(CO2) and hydrogen sulphide(H2S). These are the main constituents of biogas.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxbmicrobes-in-human-welfarebsuccess-118"><Success style="float:center;text-align:center;font-size:28px;"><b>MICROBES IN HUMAN WELFARE</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questions-b-primary-11"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS </b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>Lactic acid bacteria (LAB) are widely used to ferment or culture food products. Lactic acid bacteria (LAB) are found in curd.  Its useful applications are:</p>
<p>i) Lactic acid bacteria (LAB) is a type of bacteria which can convert milk into curd by producing an enzyme called lactase.</p>
<p>ii) Some people will suffer from a condition called lactose tolerance, which gets allergic to lactose. So the bacteria will help to remove or convert lactose.</p>
<p>iii) Lactic acid bacteria (LAB) increase the vitamin B12 content, and they are present in our digestive system also.</p>
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