Introduction
Enzymes are biological catalysts. Many chemical reactions can be speeded up by substances called catalysts. A catalyst alters the rate of a chemical reaction , without taking part in it itself. In Living organisms chemical reactions take place all the time. Almost all of these are controlled by catalysts called enzymes. For example, in the alimentary canal, large molecules are broken down to smaller ones through digestion. these are sped up by enzymes. a different enzyme is needed for each kind of food. E.g. starch is digested to the sugar maltose by an enzyme called amylase. Protein is digested to amino acids by protease. Each enzyme can be used over and over again. this means that a small amount of enzyme can catalyse the conversion of a lot of substrate into a lot of product.
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Peer Reviews
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Quality of writing
Grammar, spelling and punctuation are all good and the writer communicates their meaning very clearly.
Level of analysis
Analysis is good and in an appropriate depth for A level. Demonstrates a range of different factors that could affect enzymes accompanied by graphs and also explains what an enzyme is very clearly. Understood at a level towards the higher end of A levels. Some graph layouts are not good in the PDF format and the text makes the eyes hurt.
Response to question
Overall good mini-guide for helping with enzymes at A level, not a coursework use. There isn't really a response to a question as it more revision notes. The level of depth of analysis for enzymes at A level is good, although some topics could be explained slightly more such as PH, enzymes work at a particular PH, and then explain what happens at extremes of PH and why. Introduction and explanation of what enzymes in biology are is good. Also, the points of saturation and and limiting factors could also be explained further with relation to enzymes.
