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Cell Division Learning Objective: I can describe the process of cell division Learning Experiences: By researching cell division, I can explain its role in growth and repair and can discuss how some cells can be used therapeutically- SCN4-13a This activity asks pupils to work either as individuals, in pairs or alternatively in small groups to place the stages of cell division in the correct order and with their corresponding description. Activity 1 - Cut out and match up the stages of mitosis diagrams with the correct definition for each stage Cell Membrane divides There are no chromosomes visible 2 identical daughter cells are formed Chromosomes appear in the nucleus of the cell Chromosomes are moved to the equator by spindle fibres Chromosomes separate to form 2 sister chromatids, pulled to opposite ends of the poles by spindle fibres Activity 2 – Classroom True and False Print out stick the accompanying ‘True’ and ‘False’ cards on opposite walls of your classroom. Then read out the statements below and get pupils to move to the side of the classroom which they think represents the correct answer. Alternatively, get pupils to work individually, in pairs or small groups and hold up the true/false cards to represent their answer to the question. 1. Single Celled organisms use cell division for growth (F – Single celled organisms use cell division for reproduction. This statement is true of multicellular organisms) 2. Cell division is a means in which the number of cells in an organism increases (T) 3. The cytoplasm controls the cell’s activities (F – Nucleus) 4. The nucleus of the cell carries chromosomes that are essential in growth and development (T) 5. A chromosome is made up of two halves, each half is called a chromatid (T) 6. Chromatids are joined by a centrifuge (F – Centromere) 7. Human Beings have 46 chromosomes, or 23 pairs (T) 8. After cell division, 2 daughter cells are formed (T) 9. After cell division, one cell has half the number of cells as the original cell (F – both cells have the same number of cells – this is known as the chromosome complement) 10. Chromosomes are made from DNA Molecules (T) 11. A gene is a short section of DNA (T) 12. Individual genes code for specific proteins by specifying the order in which they should be built using amino acids (T)