Skip to main content
Super TutorResources
Chapter 10 of 15
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Microbes in Human Welfare

ICSE · Class 12 · Biology

Quick revision notes for Microbes in Human Welfare — ICSE Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.

60 questions40 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

1,000+ Class 12 students started this chapter today

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

This is just one of 14+ visuals inside Super Tutor's Microbes in Human Welfare chapter

Explore the full set

Key Topics to Revise

1

1. Microbes in Household Products

  • Lactobacillus is a genus of lactic acid bacteria used to convert milk into curd.
  • Lactic acid bacteria produce acids that coagulate and partially digest milk proteins.
  • Curd formation improves nutritional quality by increasing vitamin B12.
2

2. Microbes in Industries

  • Microbes are used as mini chemical factories in industrial production.
  • Important commercial products include medicines, organic acids, amino acids, enzymes, alcohols, and synthetic fuels.
  • Antibiotics are chemical substances produced by some microbes that can kill or retard the growth of other microbes.
3

3. Microbes in Sewage Treatment

  • Sewage treatment makes wastewater less polluting before discharge into natural water bodies.
  • Primary treatment removes particles physically by filtration and sedimentation.
  • Floating debris is removed first, and grit is removed by sedimentation.
4

4. Microbes in Energy Generation

  • Microbes help in solving the energy crisis by producing ethanol, methane, hydrogen, and hydrocarbons.
  • Gasohol is a fuel mixture of 90% unleaded gasoline and 10% alcohol.
  • Gasohol is used to combat energy shortage.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Lactobacillus converts milk into curdSome microbes are used directly asMicrobes produce industrial products such asAntibiotics are chemical substances produced byPrimary treatment removes floating debris

Frequently Asked Questions

What are the important topics in Microbes in Human Welfare for ICSE Class 12 Biology?
Key topics in Microbes in Human Welfare include Microbes in Food Industry, Industrial Chemicals and Enzymes from Microbes, Bt Toxin Mechanism of Action. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Microbes in Human Welfare — ICSE Class 12 Biology?
Understand the core concepts first, then work through the 60 practice questions available for this chapter. Revise formulas and 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 15 chapters — ICSE Class 12 Biology Revision Notes

For serious students

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

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 12 Biology.

Try Super Tutor Free
Try the full chapter — Free