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Biology. Tick the topics you want, then choose the years and how many questions. You get past-paper questions laid out for printing, with the answers on their own pages.

1. Choose the topics

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1Characteristics and classification of living organisms3

1.1Characteristics of living organisms241.2Concept and uses of classification systems221.3Features of organisms10

2Organisation of the organism2

2.1Cell structure362.2Size of specimens19

3Movement into and out of cells3

3.1Diffusion143.2Osmosis173.3Active transport10

4Biological molecules1

4.1Biological molecules34

5Enzymes1

5.1Enzymes42

6Plant nutrition2

6.1Photosynthesis426.2Leaf structure11

7Human nutrition5

7.1Diet97.2Digestive system237.3Physical digestion47.4Chemical digestion177.5Absorption14

8Transport in plants4

8.1Xylem and phloem128.2Water uptake98.3Transpiration228.4Translocation17

9Transport in animals4

9.1Circulatory systems159.2Heart169.3Blood vessels119.4Blood11

10Diseases and immunity1

10.1Diseases and immunity36

11Gas exchange in humans1

11.1Gas exchange in humans29

12Respiration3

12.1Respiration812.2Aerobic respiration1112.3Anaerobic respiration22

13Excretion in humans1

13.1Excretion in humans28

14Coordination and response5

14.1Coordination and response1514.2Sense organs1914.3Hormones1314.4Homeostasis1614.5Tropic responses16

15Drugs1

15.1Drugs14

16Reproduction6

16.1Asexual reproduction1316.2Sexual reproduction516.3Sexual reproduction in plants1916.4Sexual reproduction in humans2416.5Sex hormones in humans616.6Sexually transmitted infections3

17Inheritance4

17.1Chromosomes, genes and proteins2117.2Mitosis1517.3Meiosis1117.4Monohybrid inheritance31

18Variation and selection3

18.1Variation1218.2Adaptive features1918.3Selection17

19Organisms and their environment4

19.1Energy flow1319.2Food chains and food webs1419.3Nutrient cycles2019.4Populations21

20Human influences on ecosystems4

20.1Food supply620.2Habitat destruction620.3Pollution1520.4Conservation16

21Biotechnology and genetic modification3

21.1Biotechnology and genetic modification821.2Biotechnology1321.3Genetic modification23

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