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OCR AS Level Biology B May-June 2024 Question Paper 1 (H022-01)
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OCR AS Level Biology B May-June 2024 Question Paper 1 (H022-01)
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, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer for each question in the box provided.
1 Which statement about the fatty acids found in lipids is correct?
A They contain only carbon and hydrogen atoms.
B One fatty acid joins with three glycerol molecules to form a triglyceride.
C Saturated fatty acids contain C=C double bonds.
D The ‘tails’ of fatty acids are hydrophobic.
Your answer [1]
2 A group of students were testing plant extracts for biological molecules.
The table shows the colour of each solution before and after testing the extracts.
Colour of Benedict’s Colour of biuret Colour of iodine / KI
Extract solution reagent solution
Before After Before After Before After
A Blue Blue Blue Blue Yellow Blue-black
B Blue Green Blue Blue Yellow Blue-black
C Blue Orange Blue Blue Yellow Yellow
D Blue Orange Blue Violet Yellow Yellow
Which of the plant extracts contained both glucose and amylose but did not contain any protein?
Your answer [1]
© OCR 2024
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