Economic Importance of Yeast

Yeast exhibit both beneficial and harmful activities to human beings. This note contains information about useful and harmful effects of yeast and fungi.

Summary

Yeast exhibit both beneficial and harmful activities to human beings. This note contains information about useful and harmful effects of yeast and fungi.

Things to Remember

  • Yeast takes part in the alcoholic fermentation of sugar molasses to alcohol and carbon dioxide.
  • Along with bacteria,  the yeast gives characteristic flavour in coca beans.
  • Some yeast cells are used in the treatment of skin diseases.
  • Agaricus compestris, Amanita vaginata are used as nutrient rich food.
  • Agaricus compestris, Amanita vaginata are used as nutrient rich food.
  • A variety of fungi causes several diseases of man and animals.

MCQs

No MCQs found.

Subjective Questions

Q1:

What is responsibility of a DDC?


Type: Very_short Difficulty: Easy

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Answer: <p>The main responsibility of a DDC is to carry out all the administrative functions, execute and monitor the development works of a district.</p>

Q2:

How is drug abuse checked and controlled by DDC?


Type: Very_short Difficulty: Easy

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Answer: <p>DDC checks and controls drug abuse by organizing different awareness programmes and seminars about negative effects of drugs in the human's life.</p>

Q3:

What kind of health programs are run by your DDC?


Type: Very_short Difficulty: Easy

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Answer: <p>The health programs run by my DDC are as follows:</p>
<ol>
<li>It Conducts awareness programmes and seminars related to safety and health of human's life.</li>
<li>It Provides different medicines and vaccination to the local people to prevent from different threatening diseases like HIV AIDS, Hepatitis, etc.</li>
</ol>

Q4:

How can DDC help during natural calamities?


Type: Very_short Difficulty: Easy

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Answer: <p>DDC provides help to the victims of different natural calamities by:</p> <ol><li>Providing foods and medicines to the suffered people.</li> <li>Providing shelter to the needy people.</li> </ol>

Q5:

Write any two  functions of DDC ?


Type: Short Difficulty: Easy

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Answer: <p>The two functions of DDCs are as follows :</p>
<ul>
<li>It prepares budget for different development programs and present it to the District Council for approval.</li>
<li>It controls soil erosion.</li>
</ul>

Q6:

What  are the function of DDC ?


Type: Long Difficulty: Easy

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Answer: <p>The functions of DDC are as follows :</p>
<ul>
<li>It prepares budget for different development programs and presents it to the District Council for approval</li>
<li>It brings various positive changes in different sectors of the society like education, sanitation, environment, health, women empowerment, drinking water, etc.</li>
<li>It preserves and promotes cultural heritages of the district.</li>
<li>It audits the account of VDCs and municipalities.</li>
<li>It works to prevent epidemics.</li>
<li>It constructs and maintains roads, bridges, sewage channels, canals, ponds and taps, etc</li>
<li>It executes the works and duties assigned by the government of Nepal.</li>
</ul>
<p>&nbsp;</p>

Q7:

What is a calamity?


Type: Short Difficulty: Easy

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Answer: <p>An event that causes a great deal of damage, destruction or personal distress is called a calamity.</p>

Q8:

What is audit ?


Type: Short Difficulty: Easy

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Answer: <p>An audit is an examination of the accounts officially in order to make sure that they have been done correctly.</p>

Q9:

What is philanthropist?


Type: Short Difficulty: Easy

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Answer: <p>A philanthropist is the one who freely offers help or other assistance to those who need it.</p>

Videos

Power and Functions of District Development Committee
Economic Importance of Yeast

Economic Importance of Yeast

Economic Importance of Yeast

Yeast exhibits both beneficial and harmful activities to human beings.

Advantages of Yeast

  • Yeast takes part in the alcoholic fermentation of sugar molasses to alcohol and carbon dioxide.
  • They are used in baking industries to make bread.
  • They are used in the synthesis of protein, fat, vitamins and enzymes.
  • Yeast Vite tablet is used as food value.
  • Along with bacteria, the yeast gives characteristic flavour in coca beans.
  • Some yeast cells are used in the treatment of skin diseases.

Disadvantages of Yeast

  • Yeast spoils food, vegetables and fruits.
  • They cause many plant and animal diseases.

Economic Importance of Fungi

It also posses both useful and harmful activities to the human beings.

Food:

Agaricus composters, Amanita vaginata are used as nutrient-rich food.

baking items
source:www.on-food.com
fig:baking items

Used in baking industries, brewing industries:

Saccharomyces cerevisiae is used in baking industries for making the bread soft and in making alcohol.

Enzymes production:

Saccharomyces cerevisiae is used for the production of Invertase zymase.

Aspergillus niger? Protease, Amylase

Antibiotic preparation:

Penicillium notatum? Penicillin

Aspergillusproliferans? Proliferin

Organic acid
source:trade.indiamart.com
fig:Organic acid

Organic acid preparation:

Citric acid? Aspergillus niger

Oxalic acid? Penicillium glaucas

In hormone production:

One of the most important plants growth hormone, gibberellin is produced by the fungus Gibberella fljikuroi.

In study:

Some fungi like Neurospora are exclusively used in different genetical studies.

Harmful effect

spoilage of food
source:www.hearts.com
fig:spoilage of food

In spoilage of food

Several fungi are responsible for food spoilage in nature. Eg; Rhizopus nigricans spoils stored sweet potatoes. Yeast spoils the tomato.

Causes plant diseases

Several fungi destroy many agricultural crops, fruits, nut plants ornamental plants and shade trees.

Mushroom poisoning
source:en.wikipedia.org
fig:Mushroom poisoning

Mushroom poisoning

Sometimes poisonous mushrooms like Amanita phalloides, A.vernaetc are mistaken as edible mushrooms and as a consequence, the person pops off.

A variety of fungi causes several diseases of man and animals. The names of the diseases are named after the affected organs, causal agents, discoverers, localities of occurrence etc.

Lesson

Yeast

Subject

Biology

Grade

Grade 11

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