OCR A Level
Cambridge Institute Of Allied Health & Technology
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OCR A_Level Biology Paper 1 Marking Scheme.
- Exam (elaborations) • 25 pages • 2023
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OCR A_Level Biology Paper 1 Marking Scheme. 
Question Answer Marks AO 
element 
1 D 1 1.2 
2 B 1 1.1 
3 A 1 1.1 
4 A 1 1.1 
5 B 1 1.1 
6 B 1 1.1 
7 B 1 1.1 
8 B 1 1.1 
9 A 1 2.6 
10 A 1 2.6 
11 C 1 2.3 
12 C 1 2.4 
13 B 1 1.1 
14 C 1 1.2 
15 B 1 2.5 
Total 15 
H420/01 Mark Scheme 
Question Answer Marks AO 
element 
16 (a) (i) adenine 1 2.1 DO NOT ALLOW adenosine 
IGNORE nitrogenous base / purine 
(a) (ii) hydrolysis 1 2.1 IGNORE dephosphorylation 
(a) (ii...

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