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Photosynthesis Experiments

AQA Biology B2 2.1 Photosynthesis Hinchley Wood


on 28 January 2013

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Transcript of Photosynthesis Experiments

Experiment 1 Learning Objectives Describe the process of Photosynthesis in a word equation.

Describe where energy comes from and how it is absorbed.

Describe experiments that show the substrates and products of photosynthesis Starter In pairs, in the back of your books, try and write out the word equation for photosynthesis. Carbon + Water -----> Glucose + Oxygen
Dioxide Sunlight Chlorophyll Humans are rubbish plants. CO + H O ----> C H O + O 2 2 6 12 6 2 6 6 6 What two things are necessary for photosynthesis to take place? Experiment Plenary What are the products from photosynthesis? We have proved that plants make glucose that they transform into starch but how could we prove that they make oxygen? In plants, glucose is stored as starch. Starch is INSOLUBLE so can't leave cells easily and it won't interfere with any of the cell's processes Experiment 2 Learning Objectives Two photosynthesis experiments Starter Experiment Plenary Interpret data showing how factors affect the rate of photosynthesis.

State factors that affect the rate of photosynthesis.

Explain how conditions in greenhouses can be controlled to optimise the growth of plants. The rate of photosynthesis? What does that mean? How fast the reaction occurs How can we measure that? Assessing the amount of product that is produced. What could cause the rate of photosynthesis to change? Proving that light intensity is a limiting factor for photosynthesis How could you make an experiment that investigates if light limits the rate of photosynthesis? In books, what could you do to make a greenhouse super efficient at growing plants? 5 min
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