Edexcel Experimental Methods Learning outcomes that refer to experiments: Topic Topic name Code Outcome code Biological 2c 2.7 describe the tests for glucose and starch molecules Biological describe experiments to investigate how enzyme activity can be 2c 2.11 molecules affected by changes in temperature. Movement of describe experiments to investigate diffusion and osmosis using 2d substances into 2.16 living and non-living systems. and out of cells describe experiments to investigate photosynthesis, showing the Nutrition - 2e 2.22 evolution of oxygen from a plant, the production of starch and Flowering plants the requirements of light, carbon dioxide and chlorophyll Nutrition - describe an experiment to investigate the energy content in a food 2e 2.32 Humans sample. describe experiments to investigate the evolution of carbon 2f Respiration 2.37 dioxide and heat from respiring seeds or other suitable living organisms. Gas exchange - describe experiments to investigate the effect of light on net gas 2g 2.43 Flowering plants exchange from a leaf, using hydrogen-carbonate indicator Gas exchange - describe experiments to investigate the effect of exercise on 2g 2.48 Humans breathing in humans. Transport - describe experiments to investigate the role of environmental 2h 2.56 Flowering plants factors in determining the rate of transpiration from a shoot explain how quadrats can be used to estimate the population size of Organisms and 4.2 & 4a an organism in two different AND explain how quadrats can be their environment 4.3 used to sample the distribution of organisms in their habitats. Food production - describe a simple experiment to investigate carbon dioxide 5a 5.6 Micro-organisms production by yeast, in different conditions Additional recommended investigations (students are not expected to describe the methodology, but might well be asked to analyse data in examinations) Topic Topic name Code Outcome code Coordination and 2.81, Controlled experiments to demonstrate phototropic and geotropic 2j Response - plants 2.82 plant growth responses Coordination and A simple experiment to show how the sensitivity of the skin 2j n/a Response - humans differs on finger tips, back of hand, wrist and forearm Reproduction - A practical exercise comparing floral structure in insect- pollinated 3a 3.3 plants and wind-pollinated flowers
Edexcel Experimental Methods Learning outcomes that refer to experiments: Topic code Topic name Code Outcome 2c Biological molecules 2.7 describe the tests for glucose and starch 2c Biological molecules 2.11 describe experiments to investigate how enzyme activity can be affected by changes in temperature. 2d Movement of substances into and out of cells 2.16 describe experiments to investigate diffusion and osmosis using living and non-living systems. 2e Nutrition - Flowering plants 2.22 describe experiments to investigate photosynthesis, showing the evolution of oxygen from a plant, the production of starch and the requirements of light, carbon dioxide and chlorophyll 2e Nutrition - Humans 2.32 describe an experiment to investigate the energy content in a food sample. 2f Respiration 2.37 describe experiments to investigate the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms. 2g Gas exchange - Flowering plants 2.43 describe experiments to investigate the effect of light on net gas exchange from a leaf, using hydrogen-carbonate indicator 2g Gas exchange - Humans 2.48 describe experiments to investigate the effect of exercise on breathing in humans. 2h Transport - Flowering plants 2.56 describe experiments to investigate the role of environmental factors in determining the rate of transpiration from a shoot 4a Organisms and their environment 4.2 & 4.3 explain how quadrats can be used to estimate the population size of an organism in two different AND explain how quadrats can be used to sample the distribution of organisms in their habitats. 5a Food production - Micro-organisms 5.6 describe a simple experiment to investigate carbon dioxide production by yeast, in different conditions Additional recommended investigations (students are not expected to describe the methodology, but might well be asked to analyse data in examinations) Topic code Topic name Code Outcome 2j Coordination and Response - plants 2.81, 2.82 Controlled experiments to demonstrate phototropic and geotropic plant growth responses 2j Coordination and Response - humans n/a A simple experiment to show how the sensitivity of the skin differs on finger tips, back of hand, wrist and forearm 3a Reproduction - plants 3.3 A practical exercise comparing floral structure in insect- pollinated and wind-pollinated flowers
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