• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Rate of Photosynthesis Investigation

Extracts from this document...

Introduction

Rate of Photosynthesis In this experiment I will be investigating the effect of light intensity on the rate of photosynthesis. The variables available to me are: * Distance of light source from plant * The wattage of the lamp * The amount of leaves * Size of Elodea plant The variable I am going to investigate is the distance of the light source from the plant as it is the easiest variable to measure. ...read more.

Middle

the rate of bubbles produced, I think this because at some point there will be some other limiting factor that will make a difference to the rate. Results Group A Distance from Plant (cm) 20 40 60 80 100 120 Bubbles in ten minutes 160 80 52 30 24 12 Group B Distance from Plant (cm) 20 40 60 80 100 120 Bubbles in ten minutes 190 105 62 24 12 0 Group C Distance from Plant (cm) ...read more.

Conclusion

The rate increases at a steady rate as the light intensity increases until it reaches a certain point on the graph and then stops. This makes my prediction correct. Evaluation I could have made my experiment more fair by: * Repeating the experiment several times so that any mistakes in one experiment can be fixed by the other results. * All groups should have used the same Elodea plant. * All other possible light sources should have been ensured they could not effect the results. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Experiment to Investigate the Effect of Temperature on the Rate of Photosynthesis in Elodea.

    The binding of the enzyme and the substrate molecule because of the attraction between groups on the substrate molecule and complementary groups on the active site of the enzyme molecule. The substrate molecule does not fit perfectly with the active site, rather forces its way in and in doing so

  2. How temperature affects the rate of photosynthesis.

    and this high release of oxygen is recorded as the highest values at these temperatures on both the graphs. As the temperature increased beyond the optimum temperature, both graphs showed a decrease in the average rate of oxygen produced. This reverse affect was caused by the denaturisation of enzymes.

  1. Investigating the effect of temperature on the rate of photosynthesis

    Accuracy: I believe my results were quite accurate. This is because most results are close to the trend line, and both graphs follow the same pattern. However, some of the equipment we used was not as accurate as it could have been.

  2. An Investigation into Species Diversity with distance along a Pingo.

    pH indicates the amount of H+ ions in a solution. Foulden Common is chalk grassland. Chalk is almost a pure form of calcium carbonate; because of this the soils are expected to have a pH of 7.4-8.5, as is the case for the soils of other chalk grasslands i.e.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work