Science - Chapter 3 Learning Targets

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  1. What is the basic unit of life?
  2. What are the levels of organization in order? Examples?
    • 1. Cell - Human Cells
    • 2. Tissue - Heart Tissue
    • 3. Organ - Heart
    • 4. Organ System - Digestive System
    • 5. Organism - Llama
    • 6. Population -Llamas
    • 7. Community - Forest
    • 8. Ecosystem - Oceanic Ecosystem
  3. What contributions were made by Robert Hooke and Anton van Leeuwenhoek?
    Hooke: "The cell is the basic unit of life" - Looked at cork and found dead cells

    Leeuwenhoek: Studied tooth plaque and pond scum, looked at living cells
  4. What are the 3 parts of the cell theory?
    • 1. All living things are composed of cells
    • 2. Cells are the basic unit of life
    • 3. All cells come from pre-existing cells
  5. What do all cells have in common?
    • Small size
    • Heredity Material
    • Organelles
    • Cytoplasm
    • Membranes
  6. Why do cells not get larger?
    Because they need to balance out in order to stay stable
  7. What are some advantages of being multicellular rather than being unicellular?
    • -More cells for reproduction
    • -More variety
  8. What is the difference between prokaryotic and eukaryotic cells?
    Prokaryotic: No nucleus, no membrane covered organelles, circular DNA

    Eukaryotic: Has a nucleus, has membrane covered organelles, linear DNA
  9. What is the function of the cell wall and cell membrane? What are they made of?
    Cell Wall : Found only in plants, made of cellulose, and protects and supports the cell

    Cell Membrane : Made of phospholipids, controls what comes in and out of the cell, and supports the cell
  10. What is the difference between plants and animal cells?
    Plant Cells have a cell wall and chloroplast

    Animal Cells have lysosomes and centrioles
Card Set
Science - Chapter 3 Learning Targets
Unit 2 - Chapter 3
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