Q.7Write 10 lines on the usefulness of microorganisms in our lives.
Answers
Answer:
ANSWER
1. Penicillium, a fungi is used to produce antibiotics like penicillin.
2. Rhizobium helps in nitrogen fixation in soil and thus, increases the fertility of the soil.
3. Yeast is widely used in bakery for making fluffy bread and cake.
4. Blue green algae carry out nitrogen fixation.
5. Lactobacillus is used in dairy industries for setting of curd and in cheese making.
6. Many microbes carry out decomposition of dead remains of plants and animals.
7. Spirulina, yeast are used as single cell proteins (supplemetary food).
8. Yeast is used on commercial basis for the production of alcohol via fermentation.
9. Processing and ageing of cheese is carried out by microorganisms.
10. Some microroganisms are used as a probiotic (live bacteria and yeasts that are good for digestive system and maintain good health of the host). They are called as 'good' or 'useful' bacteria.
Answer :
- Bacteria like Lactobacillus convert milk into curd.
- Bacteria are also involved in the making of cheese.
- Acetobacter aceti is used for producing acetic acid from alcohol.
- Yeast is used in the commercial production of alcohol, wine and bakery products.
- Some specific microorganisms are helpful in manufacturing of antibiotics.
- Microorganisms act as cleansing agents and decompose the waste products into manure.
- Dead or weakened microbes are used in the preparation of vaccines.
- Some bacteria fix atmospheric nitrogen and increase soil fertility.
- Algae, yeast, fungi or bacteria may be used as an ingredient or a substitute for protein-rich foods that are suitable for human or animal consumption.
- Some microorganisms are taken as probiotics, that are believed to provide health benefits when consumed.