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Aqa As Biology Paper 2Question Paper May Questions And 100.Pdf.pdf
Aqa As Biology Paper 2Question 
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2025 Aqa As Biology 7401/2 Paper 2 Question Paper And Correct Answers
Popular2025 AQA AS BIOLOGY 7401/2 PAPER 2 QUESTION PAPER AND CORRECT ANSWERS 
 
describe and explain the steps in the light dependent reaction of photosynthesis - (ANSWER)1. photoionisation: light reaches chlorophyll in PSII, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 
2. the electron passes to a carrier protein in the thylakoid membrane, and is passed down a series of carrier molecules called an electron transfer chain. 
3. as the electron moves down, e...