Contents by modules the gcse exam can be modular or combined it is sensible however to divide the subject into modules despite the exam system used although this page is set out using the english system, students from other nations will still find much of the material relevant. What are the best conditions for catalase enzyme what happens when an enzyme or living tissue is put in hydrogen peroxide find out in this video. Read this full essay on biology coursework: the effects of osmosis on a potato chip in sugar solution biology coursework: effect of sugar solution on potato experiment to investigate the effect of osmosis in potatoes a gcse experiment looking at the effects of the concentration of sucrose solution on osmosis. Core practical 4: osmosis in potato strips 23 there will not be any coursework in the gcse (9–1) science qualifications pearson education ltd 2016 5 biology there are six core practicals in the biology section of gcse combined science gcse biology covers the same six practicals as well as an additional two.
The purpose of this investigation is to examine the effect of varying the concentration of a sugar solution (sucrose) on the amount of osmotic activity between a potato piece and the solution introduction osmosis is a special type of diffusion which involves the movement of water molecules through a. Biology experiments educational gcse teaching resources by d g mackean, powerpoint presentations, study and revision aids, key stage 3 - 4 & igcse, and books in potato tissue cylinders of potato tissue are immersed in solutions of differing strength and changes in length are measured 501 turgor in potato tissue. I recently did the osmosis potato experiment, where you cut strips of potato and leave them in different concentrations of sucrose solution overnight then you work out the change in mass, and the percentage change in mass i need three limitations, and ways to overcome them, the one i already have is the. I predict that when there is a high concentration of sucrose the potato will lose mass this is because there is a higher concentration of sucrose solution in the solution compared to that in the potato chip so water from the potato will go into the solution to even it out [tags: gcse biology osmosis coursework], 1969 words.
Cells make the enzyme catalase to remove hydrogen peroxide this investigation looks at the rate of oxygen production by the catalase in pureed potato as the concentration of hydrogen peroxide varies the oxygen produced in 30 seconds is collected over water then the rate of reaction is calculated. Investigate osmosis aim:to investigate osmosis the student is going to see what happens to the weight of a potato when it is placed into different solutions of sodium chlorides and water prediction: the student predicts that potato placed in distilled water will undergo a gain in weight and potato placed in salt solution will.
In gcse biology, unit 3: practical skills is assessed by controlled assessment this unit is worth 25 percent of the final mark we set two controlled assessment tasks for each cohort of students we renew these each year to ensure that they continue to set appropriate challenges students may complete one or both of the. Biology coursework: effect of sugar solution on potato chipsplanningbefore planning the experiment, i will research osmosis, so that i can make predictions this will help me to discover how to make this investigation fair and safe planning ahead will. Full 100 minute lesson contain covering the new 9-1 edxcel gcse biology specification contains a variety of activities and resources to support the learning of osmosis and uses a simple osmosis practical using blackcurrant juice and potatoes.
Gcse science methods particularly suited to aqa gcse science isa coursework units. Gcse biology for certification june 2014 onwards (version 11) 1 contents 1 introduction 2 11 why choose aqa 2 12 why choose gcse biology 3 13 how do i start using this specification 4 14 how can i find out more 4 2 specification at a glance 5 3 subject content 6 31 introduction to subject content 6.
Year 11 biology coursework cubed) ♢ borer (to cut the potato cell) ♢ stop watch and test tube rack ♢ 10 test tubes for each of the ten concentrations method ♢ 2 measuring cylinders (small ones- with the range from 0-1cm 1 put lab coat on and collect all equipments 2 firstly, we will experiment with the concentration of. View notes - lab report 3 - potato osmosis edited from abs 4223 at acton school of business priyal chitale ibd year 11 dhirubhai ambani international school biology laboratory report potato.