3.8 The cell cycle 0.0 / 5 ? BiologyCellular processesASAQA Created by: scarletto_266Created on: 02-10-20 12:20 What are the three stages of the cell cycle? Interphase, nuclear division and cytokinesis 1 of 10 Describe interphase Interphase occupies most of the cell cycle, it is the resting phase as no division takes place 2 of 10 Describe nuclear divion This is when the nucleus divides either into two (mitosis) or four (meiosis) 3 of 10 Describe cytokinesis This is the process by which the cytoplasm divides to form new cells 4 of 10 What is the cause of cancer? Damage to genes that regulate the cell cycle and mitosis which leads to uncontrolled growth and division of cells 5 of 10 When does a tumour become cancerous? When it changes from being benign to malignant 6 of 10 Describe how a malignant tumour is different to a benign tumour Malignant tumours grow more rapidly, are less compact and are more life-threatening 7 of 10 Why do cells divide? For growth and repair 8 of 10 How does chemotherapy treat cancer? It disrupts the cell cycle by preventing DNA from replicating adn inhibiting the metaphase stage of mitosis by interfering with spindle formation 9 of 10 What is the problem with this treatment? It affects normal cells as well as the cancerous ones 10 of 10
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