Photosynthesis: The Light Dependent Reaction | A-Level Biology Tutorial | AQA

Photosynthesis is one of the biggest topics you will cover in A Level Biology—and this will come up in the exam, guaranteed!

In this tutorial you will learn how light dependent reaction works and the steps that take place. Pay attention to details on this topic, and go over this tutorial a few times. The devil is in the details, and there are a lot of details required on the exam.

a) Chlorophyll absorbs light, leading to photoionisation of chlorophyll
b) Some of the energy from electrons released during photoionisation is conserved in the production of ATP and reduced NADP
c) The production of ATP involves electron transfer associated with the transfer of electrons down the electron transfer chain and passage of protons across chloroplast membranes and is catalysed by ATP synthase embedded in these membranes (chemiosmotic theory)
d) Photolysis of water produces protons, electrons and oxygen.

This is for all A-Level Biology AQA, OCR & Edexcel Students!

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