2025 AQA A-LEVEL BIOLOGY Paper 1 Question Paper & Mark Scheme (Merged)
Thursday 5 June 2025 [VERIFIED]
, 2
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0 1 . 1 The digestion and absorption of lipids involves:
emulsification by bile salts
micelles.
Explain each of the following.
[4 marks]
The importance of emulsification in the digestion of lipids
The role of micelles in the absorption of lipids
0 1 . 2 Describe and explain the arrangement of phospholipid molecules in the cell-surface 6
membrane.
[2 marks]
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0 2 . 1 Describe how mRNA is obtained from pre-mRNA. box
[1 mark]
0 2 . 2 Describe how RNA polymerase joins RNA nucleotides.
[2 marks]
Question 2 continues on the next page
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IB/M/Jun25/7402/1
Thursday 5 June 2025 [VERIFIED]
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 . 1 The digestion and absorption of lipids involves:
emulsification by bile salts
micelles.
Explain each of the following.
[4 marks]
The importance of emulsification in the digestion of lipids
The role of micelles in the absorption of lipids
0 1 . 2 Describe and explain the arrangement of phospholipid molecules in the cell-surface 6
membrane.
[2 marks]
tyrionpapers.com
IB/M/Jun25/7402/1
,3
Do not write
outside the
tyrionpapers.com
IB/M/Jun25/7402/1
, 4
Do not write
outside the
0 2 . 1 Describe how mRNA is obtained from pre-mRNA. box
[1 mark]
0 2 . 2 Describe how RNA polymerase joins RNA nucleotides.
[2 marks]
Question 2 continues on the next page
tyrionpapers.com
IB/M/Jun25/7402/1
