This fully-resourced lesson describes the light-dependent stage, including the production of ATP by cyclic and non-cyclic photophosphorylation. The detailed PowerPoint and accompanying resources have been designed to cover specification points 5.7 (ii) & (iii) of the Edexcel A-level Biology course and has been planned to link with the previous lesson on the structure of the chloroplast and to prepare for the next lesson on the light-independent stage.
This is a topic which students tend to find difficult so this lesson has been intricately planned to walk them through each of the key steps of the light-dependent stage. Time is taken to describe the roles of the major protein complexes that are embedded in the thylakoid membrane and this includes the two photosystems, the proton pump and ATP synthase. A series of exam-style questions have been written that link to other biological topics in this course such as cell structure and membrane transport as well as application questions to challenge them to apply their understanding. Some of these resources have been differentiated to allow students of differing abilities to access the work and to be pushed at the same time. Students will learn that there are two pathways that the electron can take from PSI and at the completion of the two tasks which describe each of these pathways, they will understand how ATP is generated in non-cyclic and cyclic fashion. The final task of the lesson asks them to compare these two forms of photophosphorylation to check that they understand when photolysis is involved and reduced NADP is formed.
Due to the detail included in this lesson, it is estimated that it will take in excess of 2.5 hours of allocated A-level teaching time to complete.
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Topic 5: Energy for biological processes (Edexcel A-level Biology B)
Respiration and photosynthesis are two of the most important biological processes, which can be poorly understood by students but unsurprisingly are commonly assessed in the terminal exams. These 11 lessons have been intricately planned so that they contain a wide range of activities that will engage the students whilst covering the key detail to try to deepen their understanding and include exam-style questions so they are prepared for the assessments. The following specification points in topic 5 of the Edexcel A-level Biology B course are covered by these 11 fully-resourced lessons: * Cellular respiration yields ATP * The different stages of aerobic respiration * The conversion of glucose to pyruvate during glycolysis * The mitochondrial matrix as the site of the Link reaction and Krebs cycle * The production of carbon dioxide, reduced NAD and ATP in the Krebs cycle * Oxidative phosphorylation * The yield of ATP from anaerobic respiration * The production of lactate in mammalian muscles * Ethanol formation in plants * The meaning of the absorption and action spectra * The reason for a variety of photosynthetic pigments in plants * The structure of the chloroplasts * The role of thylakoid membranes in the light-dependent stage * The process of cyclic and non-cyclic photophosphorylation * The use of reduced NADP and ATP in the Calvin cycle * Understand how GALP is used as a raw material in the production of monosaccharides, amino acids and other molecules * Factors that limit photosynthesis including carbon dioxide, light intensity and temperature Due to the detail of these lessons, it is estimated that it will take in excess of a month of A-level lessons to cover these lessons If you would like to sample the quality of the lessons, download the link reaction, Krebs cycle and light-independent stage lessons as these have been shared for free
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Topic 5.7: Photosynthesis (Edexcel A-level Biology B)
This bundle contains 5 fully-resourced and highly-detailed lessons which build on the students knowledge of photosynthesis from GCSE and add the fine detail that is critical when tackling questions on this topic in the A-level exams. The lesson PowerPoints and accompanying resources are filled with a wide range of activities that will engage, motivate and challenge the students whilst the detail of the following specification points in topic 5.7 of the Edexcel A-level Biology B course are covered: * The structure of the chloroplast * The role of the thylakoid membranes in the light-dependent stage of photosynthesis * The processes of cyclic and non-cyclic photophosphorylation * The role of the stroma in the light-independent stage * The fixation of carbon dioxide * The use of ATP and reduced NADP from the light-dependent stage in the Calvin cycle * The use of GALP as a raw material * The factors that limit photosynthesis If you would like to sample the quality of these lessons, then download the light-independent stage lesson as this has been shared for free
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