O Level 5090 Biology Paper 1 Topical | Answer Keys | 2009-2022 | Iram Habib Malik

CONTENT PAGE
Cambridge Syllabus Content for 2021-2022 Exams
5
Topic 1: Cell structure and organisation
1.1 Plant and animal cells 18
1.2 Specialised cells, tissues and organs 28
Topic 2: Diffusion and osmosis
2.1 Diffusion 33
2.2 Osmosis 35
2.3 Active transport 41
Topic 3: Enzymes
3.1 Enzyme action 53
3.2 Effects of temperature and pH 55
Topic 4: Plant nutrition
4.1 Photosynthesis 60
4.2 Leaf structure 81
4.3 Mineral nutrition 93
Topic 5: Animal nutrition
5.1 Nutrients 102
5.2 Diet 121
5.3 World food supplies (No Question Available)
5.4 Human alimentary canal 124
5.5 Chemical digestion 126
5.6 Absorption and assimilation 162
Topic 6: Transport in flowering plants
6.1 Water and ion uptake 173
6.2 Transpiration and translocation 184
Topic 7: Transport in humans
7.1 Circulatory system 221
Topic 8: Respiration
8.1 Aerobic respiration 264
8.2 Anaerobic respiration 267
8.3 Human gas exchange 274
Topic 9: Excretion
9.1 Structure and function of kidneys 308
9.2 Kidney dialysis 327
Topic 10: Homeostasis
10.1 Structure and function of the skin 333
Topic 11: Coordination and response
11.1 Nervous system 348
11.2 Receptors 361
11.3 Reflex action 371
11.4 Hormones 376
Topic 12: Support, movement and locomotion
12.1 Bones (No Question Available)
12.2 Joints (No Question Available)
12.3 Antagonistic muscles 385
Topic 13: The use and abuse of drugs
13.1 Antibiotics 393
13.2 Effects of heroin (No Question Available)
13.3 Effects of alcohol 396
13.4 Effects of tobacco smoke 401
Topic 14: Microorganisms and biotechnology
14.1 Microorganisms 409
14.2 Food biotechnology 429
14.3 Industrial biotechnology 441
Topic 15: Relationships of organisms with one another and with the environment
15.1 Energy flow 450
15.2 Food chains and food webs 457
15.3 Carbon cycle 476
15.4 Nitrogen cycle 483
15.5 Parasitism 491
15.6 Effects of humans on the ecosystem 497
15.7 Pollution 514
15.8 Conservation 522
Topic 16: Development of organisms and continuity of life
16.1 Asexual reproduction 525
16.2 Sexual reproduction in plants 532
16.3 Sexual reproduction in humans 591
16.4 Sexually transmitted diseases 626
Topic 17: Inheritance
17.1 Variation 637
17.2 Chromosomes and DNA 644
17.3 Monohybrid inheritance 648
17.4 Selection 693
17.5 Genetic engineering 703