AQA 7401 1 BIOLOGY AS
AQA 7401-1 BIOLOGY-AS
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AQA 7401-1 BIOLOGY-AS-PAPER1 MAY 2023
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---28juli 20232022/2023A+
- 0 1 . 1 Describe the primary structure of all proteins 
0 1 . 2 This question is about the genetic code. 
Define universal, non-overlapping and degenerate. 
[3 marks] 
Universal 
Non-overlapping 
0 2 . 4 Some strains of Streptococcus bacteria are more likely to cause lung disease than 
other strains. 
Strains that do not cause lung disease are quickly destroyed by phagocytes. 
Phagocytes are stimulated when they bind to murein on Streptococcus bacteria. 
Each strain of Streptococcus bacteria ha...
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