What is the compound Box C used to donate electrons to the photosystems and

What is the compound box c used to donate electrons

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What is the compound (Box C) used to donate electrons to the photosystems, and which gives rise to 2H + and O 2 ? Answer: Water (H 2 O) 4. What energy is used to energise the light reactions? (Box D) Answer: Light energy 5. What is the product of the reaction that is occurring at NADP + reductase? (Box E) Answer: NADPH 6. Provide names for structures i and ii. (0.5 mark for each correct answer) Answer: i) Photosystem II ii) Photosystem I 7. The electron-accepting dye, DCPIP, substitutes for which compound in your prac 4, part B experiment? Answer: NADP + YOU MUST NOT DELETE ANY TEXT FROM THE WORKSHEET TEMPLATE, HOWEVER IT IS ACCEPTABLE TO ADJUST THE SIZE OF THE ANSWER BOXES
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SLE132 Biology form and function T2 2019 Assessment Practical 4 YOU MUST NOT DELETE ANY TEXT FROM THE WORKSHEET TEMPLATE, HOWEVER IT IS ACCEPTABLE TO ADJUST THE SIZE OF THE ANSWER BOXES
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SLE132 Biology form and function T2 2019 Assessment Practical 4 Introduction In one paragraph (250 words or less) provide a brief introduction to your experiment ( 5 marks ). Use the following description and questions and the concept map on the previous page to guide you. Provide an overview of photosynthesis by describing the purpose of the light and dark reactions. How do the light and dark reaction contribute to photosynthesis? Describe the products and by products of the light reactions and the general concept of the system. What part of the system does the DCPIP substitute? YOU MUST NOT DELETE ANY TEXT FROM THE WORKSHEET TEMPLATE, HOWEVER IT IS ACCEPTABLE TO ADJUST THE SIZE OF THE ANSWER BOXES Photosynthesis is the process in which chemical reactions are proposed by the absorption of energy in the form of light ( Urry et al. 2018, p. 145 ) . This process can be concluded as the combination of water and carbon dioxide in the presence of sunlight, producing glucose and oxygen as by-products, where the CO2 is reduced and water is oxidized ( Urry et al. 2018, p. 156 ) . This process is comprised of two primary stages, the Calvin cycle and the light reactions that is further separated into photosystem I and photosystem II in the light reactions. Photosystem II, also known as the light-dependent stage of photosynthesis, involves a strong oxidizing agent called P680 being able to split water in the presence of light and function first. The process occurring in photosystem II produces oxygen as a by-product and allows the electrons to flow towards the electron carrier NADP+ where the production of ATP ensues. The photosystem I shows the NADP+ accepting the electrons and extracting the H+ ions from the water molecules to form NADPH+ H+. The energy achieved from this reaction is then combined with ATP in the Calvin cycle where the carbon fixation occurs and this results in carbon dioxide being converted into glucose (Deakin University 2018, p.48). Dark reactions then occur in stroma during Calvin cycle, this process combines CO2 with a 5-carbon acceptor molecule known as rubisco to form two individual compounds; ATP and NADPH ( Urry et al.
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