IGCSE Biology - Photosynthesis (6.1)

🎓 IGCSE Biology - The Complete Course: https://www.tes.com/teaching-resource... IGCSE Chemistry - The Complete Course: 🎓 Complete Teaching Resource (including past exam questions and mark schemes organised by chapter): https://www.tes.com/teaching-resource... 🎓 Student resource (PDF only): https://www.tes.com/teaching-resource... 🎓 All the videos (the complete library on Patreon):   / igbiocomplete   ☕️ Buy me a coffee - https://www.buymeacoffee.com/ArthurJo... Cambridge IGCSE Biology (0610/0970) Chapter 6 - Plant nutrition Topic 6.1 - Photosynthesis For exams from 2025 (core and extended) As always this video follows the Cambridge syllabus exactly and contains absolutely everything you need to know for your final exam! My other channels: ‪@igpecomplete‬Cambridge IGCSE PE ‪@ocrpecomplete‬OCR GCSE PE Timestamps: 0:00 Contents 0:53 Photosynthesis 1:46 Use and storage of carbohydrates 2:55 Mineral requirements 3:13 Experiments 9:02 Photosynthesis (extended) 9:23 Limiting factors (extended) Core content: Describe photosynthesis as the process by which plants synthesise carbohydrates from raw materials using energy from light. State the word equation for photosynthesis as: carbon dioxide + water → glucose + oxygen, in the presence of light and chlorophyll. State that chlorophyll is a green pigment that is found in chloroplasts. State that chlorophyll transfers energy from light into energy in chemicals, for the synthesis of carbohydrates. Outline the subsequent use and storage of the carbohydrates made in photosynthesis, limited to: (a) starch as an energy store (b) cellulose to build cell walls (c) glucose used in respiration to provide energy (d) sucrose for transport in the phloem (e) nectar to attract insects for pollination Explain the importance of: (a) nitrate ions for making amino acids (b) magnesium ions for making chlorophyll Investigate the need for chlorophyll, light and carbon dioxide for photosynthesis, using appropriate controls. Investigate and describe the effects of varying light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis. Investigate and describe the effect of light and dark conditions on gas exchange in an aquatic plant using hydrogencarbonate indicator solution. Extended content: State the balanced chemical equation for photosynthesis as: 6CO2 + 6H2O → C6H12O6 + 6O2 Identify and explain the limiting factors of photosynthesis in different environmental conditions.