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Cross-sectional area

This coursework assignment is to investigate resistance. To investigate it, we must first understand it. What is it? Where does it come from? The most fundamental basis to understanding resistance is to know about current. Electric current is a flow of electric charges. Like water in a heating system, theRead More

The Voltage stays the same

Introduction: Resistance is the ratio of the potential difference (or voltage) across a conductor to the electrical current. This formula displays this and shows how to work out the resistance: R=V / I Resistance=Voltage / Current Resistance is measured in Ohms (symbol O) as the resistance between two points onRead More

Patterns of Behaviour

For this lab exercise, each group was assigned the task of choosing some aspect of enzyme function and studying it by designing an original experiment. Before choosing a specific aspect to study, all the lab groups did a general experiment to study the reaction rates of a specific enzyme, catecholase.Read More

A higher concentration of enzyme

When Hydrogen Peroxide is broken down there are two products, Oxygen and water. However, the breakdown of Hydrogen Peroxide requires the enzyme catalase which catalyses the reaction. Catalase is found in microbodies and in this experiment the source of catalase is yeast. The formula for the decomposition of Hydrogen peroxideRead More

Rate of reaction

This is an investigation into the reaction speeds of Sodium Thiosulphate [Na S O] under different conditions. We will be using a catalyst, which is Hydrochloric Acid [HCl]. Na S O + HCl ==> 2NaCl + SO + S + H O When the two chemicals are mixed the SulphurRead More