Cellular Reproduction Section 9.1 Cellular Growth

Transcription

1 Cellular Reproduction Section 9.1 Cellular Growth Scan the titles, boldfaced words, pictures, figures, and captions in Section 1. Write three facts you discovered about cellular growth as you scanned the section Review Use your book or dictionary to define carbohydrate. carbohydrate New Use your book or dictionary to define each term. cell cycle chromatin chromosome cytokinesis interphase mitosis 88 Cellular Reproduction

2 Section 9.1 Cellular Growth (continued) Cell Size Limitations Analyze movement of nutrients and wastes as cell size increases. If a transport of Therefore, cells by before, slows down.. Describe how surface area-to-volume ratio relates to cell size by completing the sentence. As a cell grows larger, its increases more rapidly than its, thus surface area-to-volume ratio. The Cell Cycle Complete the diagram of the cell cycle. Describe the main events in each stage. The Cell Cycle Cellular Reproduction 89

3 Section 9.1 Cellular Growth (continued) Organize information about chromosomes in the concept web. Chromosomes SUMM ARIZE cell cycle. Identify four events that occur in a cell during interphase Analyze the relationship between cell size and the stages of the 90 Cellular Reproduction

4 Cellular Reproduction Section 9.2 Mitosis and Cytokinesis Scan Section 2 of the chapter. From the headings and illustrations list the four stages of mitosis Review Use your book or dictionary to define life cycle. life cycle New anaphase Use your book or dictionary to define the following terms. centromere metaphase prophase sister chromatid spindle apparatus telophase Cellular Reproduction 91

5 Section 9.2 Mitosis and Cytokinesis (continued) Mitosis Identify two functions of mitosis in animals. Function of mitosis in animals The Stages of Mitosis Model the stages of mitosis and the process of cytokinesis. Draw and label a cell in each stage, name each stage, and describe what is happening. Name of Phase Sketch of Cell Description cytokinesis Summarize the similarities and differences of any two phases of mitosis. 92 Cellular Reproduction

6 Section 9.2 Mitosis and Cytokinesis (continued) Summarize the function of each structure in mitosis. centromeres: microtubules: motor proteins: spindle apparatus: Cytokinesis Compare and contrast cytokinesis in plant and animal cells. Cytokinesis in Plant Cells Both Cytokinesis in Animal Cells SUMM ARIZE Create a concept map describing the stages of the cell cycle. Cellular Reproduction 93

7 Cellular Reproduction Section 9.3 Cell Cycle Regulation Scan the illustrations and read the captions in Section 3 of the chapter. Write three facts you discovered about stem cells Review nucleotide New apoptosis Use your book or dictionary to define nucleotide. Use your book or dictionary to define the following term. cancer carcinogen cyclin cyclin-dependent kinase stem cell 94 Cellular Reproduction

8 Section 9.3 Cell Cycle Regulation (continued) Normal Cell Cycle Summarize how cells regulate the cell cycle. Choose from the list of words to complete the paragraph. checkpoints cyclin-dependent kinases G 2 stage cyclin/cdk cytokinesis mitosis cyclins G 1 stage S stage Abnormal Cell Cycle Cells use and to control the cell cycle. Different combinations of start the cell cycle at different. The cell also uses to monitor the cycle for quality control. In, the cell checks the DNA for damage. If there is any damage, the cycle won t proceed to. In, if the spindle apparatus is malfunctioning, the cycle won t proceed to. Sequence the causes and effects of cancer by completing the flow chart below. Cancer is Cancer is the result of Cells lose control when Cancer cells cause damage by Identify four environmental factors that cause cancer Cellular Reproduction 95

9 Section 9.3 Cell Cycle Regulation (continued) Apoptosis Summarize information about apoptosis. Apoptosis is Organisms use apoptosis to Two processes that use apoptosis: Stem Cells Compare and contrast adult and embryonic stem cells by writing characteristics in the Venn diagram. Adult Both Embryonic CONNECT A classmate thinks that cancer and apoptosis are both harmful to organisms. Do you agree or disagree? Explain your reasoning. 96 Cellular Reproduction