A student investigated fish food - Edexcel - GCSE Biology - Question 3 - 2021 - Paper 1
Question 3
A student investigated fish food.
(a) The student added some fish food to a blue liquid in a test tube.
The solution turned from blue to purple.
(i) Use words from... show full transcript
Worked Solution & Example Answer:A student investigated fish food - Edexcel - GCSE Biology - Question 3 - 2021 - Paper 1
Step 1
The blue liquid was __________ solution.
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Answer
The blue liquid was an iodine solution.
Step 2
The purple colour showed that the fish food contained __________.
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Answer
The purple colour showed that the fish food contained protein.
Step 3
Which procedure is a health and safety precaution needed for this investigation?
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Answer
The correct procedure for health and safety is to A) use a new test tube.
