Skip to main content
Super TutorResources
Chapter 8 of 13
Revision Notes

Microbes in Human Welfare — Revision Notes

Madhya Pradesh Board · Class 12 · Biology

Microbes in Human Welfare revision notes for Madhya Pradesh Board Class 12 Biology: 4 topics in quick points. Includes Microbes in Household Products.

50 questions108 flashcards5 concepts

Interactive on Super Tutor

Studying Microbes in Human Welfare? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

Free trial, no card needed.

An infographic illustrating the different types of microbes (bacteria, fungi, viruses, protozoa, prions) with representative examples and their general characteristics or shapes.
Super Tutor

One of 13 illustrations for Microbes in Human Welfare in Super Tutor — alongside flashcards, concept maps and practice questions.

Key Topics to Revise

1

Microbes in Household Products

  • Lactobacillus and other lactic acid bacteria (LAB) grow in milk and convert it into curd.
  • LAB produce acids that coagulate and partially digest milk proteins during curd formation.
  • A small amount of curd added to fresh milk as a starter contains millions of LAB and helps rapid curd formation at suitable temperature.
2

Microbes in Industrial Products

  • Industrial-scale microbial production is done in large vessels called fermentors.
  • Yeast, especially Saccharomyces cerevisiae, is used for commercial production of ethanol.
  • Wine and beer are produced without distillation.
3

Microbes in Sewage Treatment

  • Sewage is municipal waste-water containing large amounts of organic matter and pathogenic microbes.
  • Sewage cannot be discharged directly into rivers and streams.
  • Sewage treatment is carried out in two stages: primary treatment and secondary treatment.
4

Microbes in Production of Biogas

  • Biogas is a mixture of gases containing predominantly methane, produced by microbial activity and used as fuel.
  • Certain bacteria grow anaerobically on cellulosic material and produce methane, carbon dioxide, and hydrogen.
  • These bacteria are called methanogens.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Lactic acid bacteria or LAB growFermentation is the microbial conversionMicrobes are grown on a largeAntibiotics are chemical substances produced bySewage is municipal waste water containing

Frequently Asked Questions

What are the important topics in Microbes in Human Welfare for Madhya Pradesh Board Class 12 Biology?
Key topics in Microbes in Human Welfare include Microbes in Household Products, Microbes in Industrial Products, Microbes in Sewage Treatment, Microbes in Production of Biogas. Study these first, then practise questions on each for the Madhya Pradesh Board Class 12 board exam.
How should I revise Microbes in Human Welfare for the Madhya Pradesh Board Class 12 board exam?
Learn the core ideas first, then work through the 50 practice questions on Microbes in Human Welfare. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Microbes in Human Welfare

All Madhya Pradesh Board Class 12 Biology Revision Notes

For serious students

Get the full Microbes in Human Welfare chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for Madhya Pradesh Board Class 12 Biology. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free