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Chapter 16: Section 1 The World of Cells

Chapter 16: Section 1 The World of Cells. Why are cells important ?. They help us do what we do Breakdown food Move Grow Reproduce. Cells have jobs. Some help move things around the organism Some fight disease. Bacteria . Smallest organisms on Earth Made of only one cell.

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

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

  5. Larger Organisms • Made of many cells

  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 workers

  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 manager stores food, waste In bakery: pantry, trash can

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

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

  13. Some cool cell models

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