A lesson / revision PowerPoint covering all information needed and containing informative slides and practise questions
Required Practical 6 -Investigate the effect of light intensity on the rate of photosynthesis using an aquatic organism such as pondweed
This powerpoint covers AT 1 (use appropriate apparatus to record the rate of production of oxygen gas produced; and to measure and control the temperature of water in a large beaker that acts as a ‘heat shield’), AT 2 (use a thermometer to measure and control temperature of water bath), AT 3 (use appropriate apparatus and techniques to observe and measure the process of oxygen gas production), AT 4 (safe and ethical use and disposal of living pondweed to measure physiological functions and responses to light), AT 5 (measuring rate of reaction by oxygen gas production) and includes all practical and mathmatical skills required.
The powerpoint covers:
- Background on how the rate of photosynthesis is affected by light intensity & wavelength, temperature, CO2 concentration and the amount of chlorophyll
- Aim of the practical
- Required apparatus
- A suitable method
- A look at results
- A suitable results table to record data
- Details of the Inverse Square Law
- Practise calculations of Light Intensity
- Safety concerns & improvements
- Past paper exam questions on
- Summary
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£2.50