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B5 – Plant development 5 a day revision You are provided with several plant shoots and a sample of auxin. Describe an experiment that you could carry out to show that auxin causes a shoot to bend. 5 a day revision B5 – DNA to protein DNA is made up of four different bases, A T, C and G. In a DNA sample, 23% of the bases are T. Calculate the percentage of bases that are G. Show your working!! 5 a day revision Explain how animals and plants different in terms of their capacity to grow. B5 - Development B5 – gene switching and stem cells 5 a day revision Describe how cloning can be used to produce embryonic stem cells. 5 a day revision Every nucleus in the body cell of an elephant contains 56 chromosomes. Read the statements about cell division and put a tick in the correct box for each statement. B5 – cell division