Chapter 16: Section 1 The World of Cells - PowerPoint PPT Presentation

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Chapter 16: Section 1 The World of Cells

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Chapter 16: Section 1 The World of Cells
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Chapter 16: Section 1 The World of Cells

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  1. Chapter 16: Section 1The World of Cells

  2. Why are cells important? • They help us do what we do • Breakdown food • Move • Grow • Reproduce

  3. Bacteria • Smallest organisms on Earth • Made of only one cell

  4. Larger Organisms • Made of many cells

  5. Cells have jobs Some help move things around the organism Some fight disease

  6. What are cells made of? • A cell is like a bakery Many parts doing different jobs

  7. Organelles • Each does a different job • In the bakery: the employees

  8. Cell membrane • Holds cell together • Is a boundary • Plants also have cell wall for support and protection In bakery: the walls

  9. Cytoplasm • Like Jello/Where activities take place • In Bakery: The kitchen

  10. Nucleus Vacuoles Contains chromosomes (plan for cell) In Bakery: the boss stores food, waste In bakery: fridge, pantry, trash can

  11. Mitochondria Where cellular respiration happens Food energy turned into energy cell can use In the bakery: the oven

  12. Photosynthesis Chloroplasts Makes food for cell Occurs in leaf cells Makes leaves green

  13. Some cool cell models