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

The affect of fertiliser on algae.

Extracts from this document...


The affect of fertiliser on algae For this piece of biology coursework, I have been asked to investigate the effect of fertiliser on algae. Prediction In this experiment I am investigating the effect of fertiliser on algae and I think that the more fertiliser in the solution the more algae will have grown, the reason I say this is because the fertiliser will give nutrients to the algal and make it grow faster. Method Firstly I gathered all of my equipment, which I needed for the investigation, and then I decided what concentration of fertiliser I should use. I came up with the following concentrations of fertiliser: - 0%, 20%, 40%, 60 %, 80% and 100% The remaining percentage on some of the above percentages will be made up of water, So that all the solutions have the same amount of liquid in them to ensure a fair test. ...read more.


Work tidily * Be sensible with equipment Fair Test To ensure I fair test I am going to try and make my measurements of the fertiliser as accurate as possible, so I can get as accurate results as possible. When I leave the results for a week I am going to leave them in a safe place, so I do not run the risk of the solutions being tamped with, which would greatly affect my results so that is why it is vital. Equipment list * 6 test tubes * Bottle of fertiliser * Bottle of algae * Test tube rack Results Fertiliser (%) Algal count 0 40 20 60 40 140 60 160 80 180 100 150 Analysis I have produced a graph from the table of results I retained and I have showed that my prediction was correct. ...read more.


Another reason for this is that the tubes might have been put next to a window and the sun could of evaporated some of the solution, and this did not really affect my results but they could of greatly. I could of used a tool, which makes the measurements 100% correct, although I got them as accurate as possible this would have been better because they would enable my results to be more accurate. When I counted the squares full of algae on the counting cell sometimes the cell was not full of a the solution, and it was quite hard to judge the amount of the algae is the solution, so this could have also caused it not to be a fair test. Michael Buckingham ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Molecules & Cells 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 AS and A Level Molecules & Cells essays

  1. Catalyse Investigation

    This means that the rate (calculated by 1/Time) is neglible and for all intensive purposes can be represented as zero. In order to analyse the results gained from the investigation, I have employed a statistical method to measure the effect of temperature variation on the activity of the enzyme, sucrase.

  2. Spreadsheet report

    Drinks 800 367 433 �71.93 INSTOCK Popcorn 400 190 210 �38.00 INSTOCK Posters 350 165 185 �66.00 INSTOCK sparklers 200 78 122 �20.28 INSTOCK Sweets 900 409 491 �130.88 INSTOCK T-shirts 250 75 175 �90.00 INSTOCK Albums 900 409 491 �752.56 INSTOCK Singles 200 87 113 �65.77 INSTOCK Jewellery 140 52 88 �41.60 INSTOCK Max �752.56 Week 4 Item No.

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