Core Practical: Food Tests (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What colour does iodine solution turn if starch is present?
What colour does iodine solution turn if starch is present?
Blue-black
What colour change indicates reducing sugars in Benedict's test?
What colour change indicates reducing sugars in Benedict's test?
Blue to cloudy orange or brick red
What colour indicates proteins in the Biuret test?
What colour indicates proteins in the Biuret test?
Mauve or purple
What indicates lipids in the emulsion test?
What indicates lipids in the emulsion test?
Milky-white emulsion forms
Which reagent is used to test for starch?
Which reagent is used to test for starch?
Iodine solution
Which reagent is used to test for reducing sugars?
Which reagent is used to test for reducing sugars?
Benedict's solution
What temperature should the water bath be set at for Benedict's test?
What temperature should the water bath be set at for Benedict's test?
95°C
Why must eye protection be worn during food tests?
Why must eye protection be worn during food tests?
Potassium hydroxide harms skin and eyes
Which biomolecules are present in beef?
Which biomolecules are present in beef?
Proteins and lipids
Which biomolecule is present in rice?
Which biomolecule is present in rice?
Starch only
Which biomolecules are in breakfast cereal?
Which biomolecules are in breakfast cereal?
Starch, reducing sugars, and lipids
How many drops of copper sulfate are added in the Biuret test?
How many drops of copper sulfate are added in the Biuret test?
Two drops
How much ethanol is added in the emulsion test for lipids?
How much ethanol is added in the emulsion test for lipids?
2 cm³