NADPH and ATP are used to regenerate RUBPĮach time the Calvin cycle turns, a single Carbon is reduced. Needs the products of the LDR - ATP and NADPH You can download the papers and marking schemes by clicking on the links below. Limited by speed and quantity of RUBISCO enzyme (kinetic energy - temperature) and substrate concentration (Carbon dioxide) OCR A-Level Biology Past Papers The OCR A-Level Biology A (H420 & H020) and Biology B Advancing Biology (H422 & H020) past exam papers section of Revision Science. Light Independent Reaction (reduction of carbon dioxide) - occurs in the stroma (the cytoplasm of the chloroplast). Make sure that you have chosen the correct OCR specification as there are 2 specifications for OCR A level Biology.

Reduces NADP with an electron from splitting water (photolysis) at PSII. Ocr biology a level past papers 2019 OCR Biology B Spec at a glance The OCR A level Biology B specification is demanding with a wide breadth of content, data analysis and mathematical skills forming major parts of the course. If the answer you have written is not right, change it to the Chemistry GCSE Past Papers. Use these to practice your exam question answers and highlight revision topics you need to work on. 60 of members achieve a 6, 7, 8 or 9 grade. More will be added once they have been released by the exam boards. This is our complete collection of Biology past papers for the latest AQA, Edexcel and OCR specifications. The flow of electrons is driven by the capturing of light by a range of different pigments which channel the energy to a chl a molecule at the reaction centre of the photosystem - which then loses an electron. OCR A-Level Biology Past Papers We have put together a comprehensive list of past papers for all of the OCR A-Level Biology exams. Please consider whitelisting us on your ad blocker, or making a donation. Phosphorylates ADP (through chemiosmosis) - creates the Hydrogen ion gradient by the flow of electrons along the ETC in the thylakoid membrane. Powerpoints and notes, a pack of long data analysis exam questions and a test on photosynthesis

Ocr biology past papers