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Microbes in Human Welfare
Biology · Chapter 13 · Unit 3: Biology and Human Welfare
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Your path through this chapter
Visual lesson Beta
- Part 1: Microbes at home and in industry14 slides
- Part 2: Sewage, biogas, biocontrol and biofertilisers15 slides
Flashcards Beta
30 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
61 board-style questions with instant checks: Multiple choice 24, Short answer 18, Assertion and reason 5, Fill in the blanks 4.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
Step 5: Not started- Chapter test (long) — Microbes in Human Welfare · 40 marks · 100 min
- Chapter test (short) — Microbes in Human Welfare · 20 marks · 50 min
Topics 6
- Microbes in household products: Lactobacillus (curd), Saccharomyces (bread), Propionibacterium (Swiss cheese)
- Industrial products: beverages, antibiotics (penicillin), organic acids, alcohols, enzymes (lipase, pectinase, protease, streptokinase), cyclosporin A and statins
- Sewage treatment: primary and secondary treatment
- Biogas: methanogens, composition, biogas plant and process
- Biocontrol agents (ladybird, dragonfly, Bt, Trichoderma, baculoviruses); integrated pest management; harmful effects of chemical pesticides
- Biofertilisers: Rhizobium, Azospirillum, Azotobacter, Glomus (mycorrhiza), cyanobacteria