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Gas balance in respiration and photosynthesis
What plants make by photosynthesis, plants and animals break down by respiration. In any community, the balance of carbon dioxide and oxygen is essential to all elements of the community. In individual organisms, detailed analysis of gas exchange can...
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How do plants and animals change the environment around them?
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Measuring respiratory quotient
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Measuring the rate of metabolism
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Investigating factors affecting the breathing rate of a locust
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Nitrogen-fixing bacteria free-living in the soil
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Topics
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Microscale investigations of catalase activity in plant extracts
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Using a spirometer to investigate human lung function
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Investigating an enzyme-controlled reaction: catalase and hydrogen peroxide concentration
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Investigating factors affecting the heart rate of Daphnia
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Tracking active uptake of minerals by plant roots
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Observing the effects of exercise on the human body
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Active uptake
some exchanges require an input of energy to occur. This usually involves the absorption of oxygen for the process of respiration. Experiments
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Energy
In this area you will find activities relating to photosynthesis and to cellular respiration, linked by the concept of energy transfer in living systems, and making connections between plants, animals and carbon dioxide in the atmosphere. Experiment...