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How do I make an argument in an exam?

It's important to take a few minutes to quickly plan your argument in response to a particular question. You do not want to waste too much writing time doing this, but it is crucial to have a rough structure...
RM
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A student carries out an experiment to determine the melting point of a waxy solid. She heats a sample until it melts, then measures and records its temperature as it cools down. Explain how the student could use her results to decide whether the waxy

...solid is a pure substance or a mixture. Firstly, she would need to plot a graph of temperature against time. Temperature remains constant at the melting point. The graph will show whether the solid is pur...
LE
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Describe how alterations to tumour suppressor genes can lead to the development of tumours.

Alterations to tumour suppressor genes such as their increased methylation, mutation in the genes, or an instance where the tumour suppressor genes are not being transcribed or expressed, results in rapid an...
LE
Answered by Lucy Erin S. • Biology tutor
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Explain the lock and key model of enzyme action, including how they are denatured.

An enzyme is a protein that functions as a biological catalyst by speeding up chemical reactions and remaining unchanged by the reaction. The place on an enzyme where the molecule binds is called the active ...
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Answered by Lucy Erin S. • Biology tutor
11992 Views

How does nervous input in a human cause increase cardiac output during exercise?

The nervous system can be divided into two branches-the parasympathetic branch and the sympathetic branch. The activity of the sympathetic nervous system is increased in response to exercise. This response t...
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Answered by Tamarind R. • Biology tutor
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