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Bellringer

Bellringer. Work on Worksheet from Friday. Cells & Cell Organelles. Doing Life’s Work. Cell Theory. All living things are made of cells -Multicellular: made of many cells -Unicellular- made of one cell Basic unit of structure and function: simplest , most basic component

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Bellringer

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  1. Bellringer • Work on Worksheet from Friday

  2. Cells & Cell Organelles Doing Life’s Work

  3. Cell Theory • All living things are made of cells -Multicellular: made of many cells -Unicellular- made of one cell • Basic unit of structure and function: simplest , most basic component • All cells come from pre-existing cells: cell divides to form 2 identical cells

  4. Why study cells? • Cells  Tissues  Organs  Organ Systems Organism • _Hierarchy: Cells are simplest part of an organism • Example:

  5. Why Study Cells • Major functions of cells • 1. To make energy • 2. To make proteins • 3. To make more cells

  6. bacteria Types of cells Prokaryote ______________ Eukaryotes ______________ Animal Plant

  7. Animal cell Bacterial cell Cell size comparison Eukaryotes are 1-100 times bigger than prokaryotic cells

  8. Prokaryote • Bacteria • Most are unicellular • Lack a nucleus • Lack organelles

  9. Eukaryotes • Mostly multicellular • Plants, Animals, Fungi • Distinct organelles for job specialization

  10. #2:Match the picture with the correct type of symbiosis. A: mutualism B. commensalism C. Parasitism A B

  11. #1A: What word best describes the organisms shown below?

  12. #15A: The following molecule is the monomer unit of what polymer?#15B: What test is used to test for the presence of these molecules?

  13. #14A: What type of molecule is shown below?#14B: The molecule below is the monomer unit of what polymer?

  14. Organelles • Organelles do the work of cells • each structure has a job to do • keeps the cell alive; keeps you alive They’re likemini-organs! Model Animal Cell

  15. Organelles in All Cells • Cell Membrane and Ribosomes are in Prokaryotes and Eukaryotes

  16. phosphate“head” Cell membrane • Function • Homeostasis: maintain proper conditions in the cell • Control what enters and leaves the cell • O2,CO2, food, H2O, nutrients, waste • Communication Between Cells • Structure: Mosaic Model • double layer of fat • Phospholipid Bilayer__________ • _Proteins: pumps and channels__________ • Carbohydrates: Chemical ID cards__ lipid “tail”

  17. Ribosomes • Function • Make Proteins • read instructions to build proteins from DNA • Structure • some free in cytoplasm: Smooth ER • some attached to ER: Rough ER Ribosomes on ER

  18. Organelles in All Eukaryotes • Nucleus • Mitochondria • Ribosome

  19. Nucleus • Function • control center of cell • protects DNA • instructions for building proteins Structure: double membrane

  20. Mitochondria • Function • Transform energy into an usable form (ATP) • sugar + O2  ATP • fuels the work of life • Cellular Respiration • Structure • double membrane ATP

  21. Venn Diagram • Make a Venn Diagram comparing and contrasting Prokaryotes and Eukaryotes • Start Organelles Graphic Organizer

  22. Organelles In Plants but not Animals • Vacuole • Chloroplast • Cell Wall

  23. Function • Food and WaterStorage • Vacuole= plants only • Vesicle- in animals—small vacuoles • Structure • membrane sac Vacuole plant cells

  24. Chloroplast • Photosynthesis • Capture light energy and transfer into chemical energy • Double membrane

  25. Cell Wall • Made of cellulose • Inflexible barrier • Protect and supports cell

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