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This slideshow covers the B4 OCR 21st Century unit from the 2016 syllabus, including: respiration and its equation, production of ATP, uses for ATP, anaerobic respiration, anaerobic respiration in plants and yeast, calorimetry, microscopy, use of scanning electron microscopes, cell division by mitosis, the stages of mitosis and interphase, cancer, cell growth through meiosis, fertilisation, cell differentiation, stem cells, meristems, plant hormones, use of ethene and gibberellins in plants, stem cell research, making decisions about stem cell research.

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