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effect of concentration of copper sulphate on the action of amylase to break down starch.
- Essay length: 8508 words
- Submitted: 14/11/2010
-
Marked by teacher:
Stephanie Wells
Teacher essay summary
****A very well researched and presented report in which the key elements of A level coursework are addressed well. The report could be improved by considering the evaluation of the experimental methodology in more detail and by repeating the the experiment for the anomalous concentration.
Research and Rationale
The rationale for the investigation is clearly justified in terms of its scope and appropriate biological principles are discussed. Numerous additional sources ( beyond normal A level texts) were selected and used effectively to provide a context for the investigation.
Planning
There is clear evidence of thought and ingenuity in the design of the experiment. There was good attention to detail in the way the variables were controlled or taken into account. There was a suitable pilot experiment and the experimental method was suitably modified.
Observing and Recording
The observations and measurements were carried out over a suitable range of values and sufficient observations were made to allow a conclusion. The numerical results were recorded clearly and to an appropriate degree of precision. Measurements and observations were repeated but the anomalous result, although noted, was not further investigated.
Interpreting and Evaluation
Data is processed using appropriate methods that revealed the trend and pattern in the investigation. The chosen statistical tests are clearly set out and interpreted. Results were interpreted using biological principles and concepts of A level standard.
The limitations of the procedure were commented on but there were few sensible modifications suggested.
Communicating
The layout of the report conforms to that expected of a scientific paper with helpful headings and subheadings. Images illustrate the points effectively. Data is mostly presented effectively in graphs tables and diagrams. There are minor spelling errors and grammatical errors but appropriate technical terms are used throughout.
Sources are evaluated with reference to their credibility within the wider scientific community.
Marked by teacher Stephanie Wells 26/04/2013
The first 200 words of this essay...
Biology Coursework
Abstract
In this investigation I am going to explore the effect of concentration of copper sulphate on the action of amylase to break down starch. Copper sulphate is a very common chemical that can be used in a lot of different areas, but little has been discussed on its effect on amylase. I will find out which type of inhibitor copper ion is and how does it actually inhibits amylase, and also how concentration of copper sulpahte will affect the rate at which amylase works.
Aim of investigation
The aim of this investigation is to find out how concentration of copper sulphate affects the action of amylase.
Hypothesis
The higher the concentration of copper sulphate, the slower the amylase works.
Rationale
There are two ways that we could have consumed copper sulphate. Water pipes are responsible for transporting water, and some of them are made out of copper. Copper pipes can become rusted if there is high sulphate content in the water, basic copper sulphate is precipitated which can grow through the pipe wall creating pit holes [1]. Copper sulphate is also used in some places to treat
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MbT essay summary
****A very well researched and presented report in which the key elements of A level coursework are addressed well. The report could be improved by considering the evaluation of the experimental methodology in more detail and by repeating the the experiment for the anomalous concentration.
Research and Rationale
The rationale for the investigation is clearly justified in terms of its scope and appropriate biological principles are discussed. Numerous additional sources ( beyond normal A level texts) were selected and used effectively to provide a context for the investigation.
Planning
There is clear evidence of thought and ingenuity in the design of the experiment. There was good attention to detail in the way the variables were controlled or taken into account. There was a suitable pilot experiment and the experimental method was suitably modified.
Observing and Recording
The observations and measurements were carried out over a suitable range of values and sufficient observations were made to allow a conclusion. The numerical results were recorded clearly and to an appropriate degree of precision. Measurements and observations were repeated but the anomalous result, although noted, was not further investigated.
Interpreting and Evaluation
Data is processed using appropriate methods that revealed the trend and pattern in the investigation. The chosen statistical tests are clearly set out and interpreted. Results were interpreted using biological principles and concepts of A level standard.
The limitations of the procedure were commented on but there were few sensible modifications suggested.
Communicating
The layout of the report conforms to that expected of a scientific paper with helpful headings and subheadings. Images illustrate the points effectively. Data is mostly presented effectively in graphs tables and diagrams. There are minor spelling errors and grammatical errors but appropriate technical terms are used throughout.
Sources are evaluated with reference to their credibility within the wider scientific community.
