Name _______________________ SNC 1D Grade 9 Science Chapter 1.3 The Cell Cycle Clearly mitosis and cell division cannot completely explain how two cells (a sperm and an egg) can divide and form into an organism composed of 60 trillion cells. Our bodies are made up of many types of cells, each doing a specific job as a result of cell specialization. This, among other things is the topic of chapter 1.3. Using figure 1.14 as a guide, explain the levels of specialization that are evident in a human. ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ Explain two reasons why cells die. ______________________________________________________________________________________________ ______________________________________________________________________________________________ In terms of regeneration, explain the difference between breaking a bone or receiving a cut as opposed to breaking your spinal chord. ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ Explain the causes and effects of cancer on a human body. ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________