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Bellringer

Learn about cell theory, types of cells, organelles, and their functions through interactive activities and engaging content. Discover why cells are essential in the hierarchy of life and their significance in all living organisms.

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Bellringer

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Presentation Transcript

  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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