Compare food samples using equal food masses and water volumes, then explain how insulation, complete combustion and apparatus design improve energy estimates.
Scientists have genetically modified soya plants so that the soya beans they produce contain less saturated fat.
The scientists produced one transgenic soya plant. Micropropagation was then used to make multiple copies of this transgenic soya plant.
A student uses this equipment to compare the energy content of transgenic soya beans with the energy content of non-transgenic soya beans.
Describe how the student could use the equipment to make a valid comparison of the energy content of the two types of soya bean.
The diagram shows a different type of apparatus that can be used for the investigation.
Explain two reasons why this apparatus will give a more accurate energy value than the apparatus used by the student.
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