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Multicellular organisms:

Multicellular organisms:. Living things made of more than one cell ALL animals and land plants are multicellular Multicellularity has evolved at least 25 times first appeared several billion years ago in cyanobacteria. Organization (large to small). Organism - A living thing -ex. human.

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Multicellular organisms:

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  1. Multicellular organisms: • Living things made of more than one cell • ALL animals and land plants are multicellular • Multicellularity has evolved at least 25 times • first appeared several billion years ago in cyanobacteria

  2. Organization (large to small) • Organism- A living thing -ex. human

  3. Organization (large to small) • Organism • Organ System- organs that work together to do a job -ex: circulatory system

  4. Organization (large to small) • Organism • Organ System • Organ- tissues that work together to do a job -ex: stomach

  5. Organization (large to small) • Organism • Organ System • Organ • Tissue- Similar cells that work together to do a job -ex: digestive tissue

  6. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell- smallest unit of life Ex- brain cell

  7. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle- part of a cell with a specific job -ex: mitochondria

  8. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle • Molecule- 2+ atoms held together by bonds Ex- water

  9. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle • Molecule • Atom- basic unit of matter -ex: carbon

  10. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle • Molecule • Atom • Subatomic particles- piece of matter smaller than atoms -ex: proton

  11. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle • Molecule • Atom • Subatomic particles • Energy- the ability to move things

  12. Organization (large to small) • Organism • Organ System • Organ • Tissue • Cell • Organelle • Molecule • Atom • Subatomic particles • Energy- the ability to move things

  13. Cellular differentiation • Multicellular organisms develop specialized cells • Ex: brain cells, muscle cells, skin cells…

  14. Stem Cells • Undifferentiated cells that can differentiate

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