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G9 ch9.1 cell cycle
Cellular growth involves a cell cycle with distinct phases: interphase consisting of G1, S, G2 where the cell grows and DNA is replicated; mitosis where the cell divides into two daughter cells through the phases of prophase, metaphase, anaphase and telophase; and cytokinesis where the cell physically separates the daughter cells. The cell cycle results in cell reproduction, growth, replacement and repair.
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G9 ch9.1 cell cycle
- 1. Cellular Growth Chapter 9Lesson 1 p.244-247
- 2. Vocabulary • Cell Cycle •Interphase • Mitosis • Cytokinesis • Chromosome • Chromatin
- 3. Outline • Intro toCell Cycle – Phases – Length • Interphase – G1 – S – G2 • Mitotic Phase – Mitosis • Prophase, Metaphase, Anaphase, Telophase – Cytokinesis • Results of Cell Division – Reproduction, Growth, Replacement, Repair
- 4. Why are cellsso small? • Most cells are less than 100µm (100x10^-6)
- 5. Ratio of surfacearea to volume • Why is increased surface area so important to cells? – Transport • More proteins • Greater diffusion of substances • Increased reaction rates • Greater diffusion of waste material – Cellular Communications • Signaling proteins
- 7. Cell diameter Cell 1: 0.00002m Cell 2: 0.001m Cell3: .025m Cell 4: .030m Cell 5: 15m Surface area .0000000025m 0.000006m 0.00375m .0054m 1350m Volume 8.0 x 10^15 m 0.000000001m 0.000015625m 0.000027m 3375m Surface Area to Volume Ratio 312500:1 6000:1 240:1 200:1 2:5 Cell diameter Cell 1: 0.00002m Cell 2: 0.001m Cell 3: .025m Cell 4: .030m Cell 5: 15m Surface area Volume Surface Area to Volume Ratio
- 8. G1: Gap 1;cell grows and performs normal functions S: synthesis; DNA is replicated G1: Gap 1; cell grows and performs normal functions
- 10. Main Ideas • Allliving organisms are composed of cells. • Cells divide to increase their numbers through a process of mitosis, which results in two daughter cells with identical sets of chromosomes.
- 11. Cell Cycle 6phases • Interphase (G1, S, G2) • Mitosis – Prophase – Metaphase – Anaphase – Telophase • Cytokinesis Mitotic Phase
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- 13. Introduction • Most cellsin an organism go through a cycle of growth, development, and division • Goal: Grow, develop, replace old or damaged cells, produce new cells
- 14. Introduction • Most cellsin an organism go through a cycle of growth, development, and division • Goal: Grow, develop, replace old or damaged cells, produce new cells
- 18. Interphase THE CELL: • growsto it’s mature size • makes a _____ of its DNA • prepares to _______ into two cells Copy Divide
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- 23. Organelle Replication • Someorganelles have their own DNA – Chloroplast and mitochondria – Make copies of themselves on their own
- 24. The Mitotic Phase •2Phases: –Mitosis and Cytokinesis •Results: –2 daughter cells
- 25. Mitosis • Prophase - •Metaphase - • Anaphase - • Telophase -
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Editor's Notes
- #5Â Velonia ventricosa Protist Xenophyophores (10km) http://learn.genetics.utah.edu/content/cells/scale/