AQA A LEVEL BIOLOGY PAPER 2 QUESTION PAPER 2023 (7402/2)

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AQA A LEVEL BIOLOGY PAPER 2 QUESTION PAPER 2023 (7402/2). DOWNLOAD OFFICIAL AND VERIFIED AQA A LEVEL BIOLOGY PAPER 2 QUESTION PAPER 2023 ON www.leakedexams.com.

0 1 . 1 A student used chromatography to separate the different photosynthetic pigments in a
chlorophyll solution. She had the following materials.
Chromatography paper
A ruler and pencil
Suitable glassware
A solvent (solvent A)
2 cm3 of the chlorophyll solution
Describe how she could use these materials to separate the photosynthetic pigments
by chromatography.
[4 marks]
0 1 . 2 Using solvent A, the student separated five pigments. She then repeated her method
using a different solvent, B. Using solvent B, she separated six pigments.
Explain the difference between these results.
[2 marks]

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Author	OCR KING
Published	30 Jul 2024
Included files	PDF
7402 7402/2 AQA A LEVEL BIOLOGY PAPER 2 QUESTION PAPER 2023 AQA A LEVEL BIOLOGY PAPER 2 AQA A LEVEL BIOLOGY PAPER 2 2023 AQA A LEVEL BIOLOGY PAPER 2 AQA AQA BIOLOGY 2023 AQA BIOLOGY BIOLOGY 2023 BIOLOGY