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Start Alphabetical order

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1 Start Alphabetical order
Unit One The Study of Life DEFINTIONS Start Alphabetical order Go to Index These definitions are the work of practising teachers - not the SEC - and may have to be adjusted depending on the precise wording of an exam question. E&OE

2 INDEX 1.1 1.3 All 1.2 1.4 – 1.5 Scientific Method Food Ecology
Characteristics of Life 1.4 – 1.5 Ecology Back to Start

3 1.1 Scientific Method Biology Control Data Double blind Hypothesis
Placebo Principle or Law Replicate(s) Theory Back to Start

4 1.2 Characteristics of Life
Anabolism Catabolism Cell Continuity of life Egestion Excretion Life[characteristics of] Metabolism Nutrition Reproduction Response Back to Start

5 1.3 Food Anabolism See Unit 1.2 Catabolism See Unit 1.2
Go to Unit 1.2 Index Back to Start

6 1.4 1.5 Ecology Abiotic Factor Biosphere Biotic Factor Carnivore
Climatic Factor Competition* Conservation Contest Competition* Decomposition Denitrification Ecology Ecosystem Edaphic Factor Food Web Grazing Food Chain Habitat Herbivore Niche Nitrification Nitrogen fixing Omnivore Parasitism Pollution Population* Predation Predator Prey * Primary Consumer Producer Pyramid of Numbers Qualitative survey Quantitative survey Scramble competition* Secondary Consumer Symbiosis * Tertiary Consumer Trophic Level Back to Start

7 All Back to Start Abiotic Factor Anabolism Biology Biosphere
Carnivore Catabolism Cell Climatic Factor Competition* Conservation Contest Competition* Continuity of life Control Data Decomposition Denitrification Double blind Ecology Ecosystem Edaphic Factor Egestion Excretion Food Web Grazing Food Chain Habitat Herbivore Hypothesis Life[characteristics of] Metabolism Niche Nitrification Nitrogen fixing Nutrition Omnivore Parasitism Placebo Pollution Population Predation* Predator Prey * Primary Consumer Principle or Law Producer Pyramid of Numbers Qualitative survey Quantitative survey Replicate(s) Reproduction Response Scramble competition* Secondary Consumer Symbiosis * Tertiary Consumer Theory Trophic Level All Back to Start

8 Abiotic Factor A non - living factor Back to Index subsection
Back to Full Index

9 Anabolism Chemical reaction where smaller molecules are joined together to form larger molecules Back to Index subsection Back to Full Index

10 The Study of living things (organisms)
Biology The Study of living things (organisms) Back to Index subsection Back to Full Index

11 the part of the planet where life occurs
Biosphere the part of the planet where life occurs Back to Index subsection Back to Full Index

12 Biotic Factor A living factor Back to Index subsection
Back to Full Index

13 An animal that feeds on animals only
Carnivore An animal that feeds on animals only Back to Index subsection Back to Full Index

14 Chemical reaction where larger molecules are broken down to
Catabolism Chemical reaction where larger molecules are broken down to smaller molecules Back to Index subsection Back to Full Index

15 Basic structural unit of an organism (that possesses its
Cell Basic structural unit of an organism (that possesses its characteristics) Back to Index subsection Back to Full Index

16 Climatic Factor Factors relating to long term weather conditions [which affects the distribution of organisms in an ecosystem] Back to Index subsection Back to Full Index

17 When 2 or more organisms fight for a resource that is in short supply.
Competition* When 2 or more organisms fight for a resource that is in short supply. Back to Index subsection Back to Full Index

18 The wise management of the environment or organisms
Conservation The wise management of the environment or organisms Back to Index subsection Back to Full Index

19 Contest Competition* An active physical confrontation between 2 organisms in which only one wins the resource Back to Index subsection Back to Full Index

20 The ability of organisms to exist from one generation to the next
Continuity of life The ability of organisms to exist from one generation to the next Back to Index subsection Back to Full Index

21 Standard for comparison
Control Standard for comparison Back to Index subsection Back to Full Index

22 Data Measurements or observations or information gathered from an experiment Back to Index subsection Back to Full Index

23 The decaying of a dead organism
Decomposition The decaying of a dead organism Back to Index subsection Back to Full Index

24 The conversion of nitrates into atmospheric nitrogen
Denitrification The conversion of nitrates into atmospheric nitrogen Back to Full Index Back to Index subsection

25 Double blind Neither the tester nor the person being tested knows which is the real pill and which is the placebo. Back to Index subsection Back to Full Index

26 Ecology Study of the interaction between organisms themselves and their environment. Back to Index subsection Back to Full Index

27 Ecosystem A community of living organisms interacting with one another and their environment Back to Index subsection Back to Full Index

28 Edaphic Factor Factors relating to the soil [which affects the distribution of organisms in a (terrestrial) ecosystem] Back to Index subsection Back to Full Index

29 Removal of unabsorbed material from the body
Egestion Removal of unabsorbed material from the body Back to Index subsection Back to Full Index

30 Removal of the waste products of metabolisms
Excretion Removal of the waste products of metabolisms Back to Index subsection Back to Full Index

31 Two or more interconnected food chains
Food Web Two or more interconnected food chains Back to Index subsection Back to Full Index

32 Feeding relationship between organisms in which energy is transferred.
Grazing Food Chain Feeding relationship between organisms in which energy is transferred. Back to Index subsection Back to Full Index

33 The place where an organism lives.
Habitat The place where an organism lives. Back to Index subsection Back to Full Index

34 An animal that feeds on plants only.
Herbivore An animal that feeds on plants only. Back to Index subsection Back to Full Index

35 Educated guess based on observation
Hypothesis Educated guess based on observation Back to Index subsection Back to Full Index

36 Life [characteristics of]
Common features that separate living things from non-living things (organisation, nutrition, excretion, response & reproduction). Back to Index subsection Back to Full Index

37 All the chemical reactions taking place in living organisms
Metabolism All the chemical reactions taking place in living organisms Back to Index subsection Back to Full Index

38 The functional role of an organism (in an ecosystem)
Niche The functional role of an organism (in an ecosystem) Back to Index subsection Back to Full Index

39 Nitrification The process of converting ammonia into nitrites and/or nitrites to nitrates Back to Index subsection Back to Full Index

40 The conversion of nitrogen into nitrates.
Nitrogen fixing The conversion of nitrogen into nitrates. Back to Index subsection Back to Full Index

41 Ability of living organisms to obtain food (energy)
Nutrition Ability of living organisms to obtain food (energy) Back to Index subsection Back to Full Index

42 An animal that eats both animals and plants.
Omnivore An animal that eats both animals and plants. Back to Index subsection Back to Full Index

43 An organism which lives in or on another causing it harm.
Parasitism An organism which lives in or on another causing it harm. Back to Index subsection Back to Full Index

44 Control used in drug testing
Placebo Control used in drug testing Back to Index subsection Back to Full Index

45 The harmful addition to the environment (by humans)
Pollution The harmful addition to the environment (by humans) Back to Index subsection Back to Full Index

46 The numbers of a particular species [in a particular ecosystem]
Population The numbers of a particular species [in a particular ecosystem] Back to Index subsection Back to Full Index

47 The act of killing and eating another animal ( or organism) for food.
Predation* The act of killing and eating another animal ( or organism) for food. Back to Index subsection Back to Full Index

48 Predator An animal (or organism ) which kills and eats an animal (or organism or prey) Back to Index subsection Back to Full Index

49 The animal hunted and killed [by its prey]
Back to Index subsection Back to Full Index

50 An organism which feeds on the producer.
Primary Consumer An organism which feeds on the producer. Back to Index subsection Back to Full Index

51 Principle or Law A proven theory Back to Index subsection
Back to Full Index

52 An organism which makes its own food
Producer An organism which makes its own food Back to Index subsection Back to Full Index

53 The numbers of organisms at each trophic level.
Pyramid of Numbers The numbers of organisms at each trophic level. Back to Index subsection Back to Full Index

54 A survey which indicates if a species is present or not
Qualitative survey A survey which indicates if a species is present or not Back to Index subsection Back to Full Index

55 Quantitative survey A survey which records or estimates the numbers of a species (in a particular ecosystem). Back to Index subsection Back to Full Index

56 Make a duplicate(s) of an experiment or procedure
Replicate(s) Make a duplicate(s) of an experiment or procedure Back to Index subsection Back to Full Index

57 Reproduction Ability of an organism to create new individuals of its own kind (by either sexual or asexual means). Back to Index subsection Back to Full Index

58 Ability of an organism to react to stimuli
Response Ability of an organism to react to stimuli Back to Index subsection Back to Full Index

59 Scramble competition*
A confrontation which results in each organism getting some of the resource Back to Index subsection Back to Full Index

60 An organism which feeds on the primary consumer.
Secondary Consumer An organism which feeds on the primary consumer. Back to Index subsection Back to Full Index

61 Symbiosis * A relationship between 2 species living in close proximity involving benefit to one or both Back to Index subsection Back to Full Index

62 An organism which feeds on the secondary consumer.
Tertiary Consumer An organism which feeds on the secondary consumer. Back to Index subsection Back to Full Index

63 Theory A proven hypothesis Back to Index subsection Back to Full Index

64 The position of an organism in a food chain
Trophic Level The position of an organism in a food chain Back to Index subsection Back to Full Index

65 The End Back to Start

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