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Cell Organelles Powr Point


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  • 1. Cells
  • 2. Common Cell Traits
    • Cells come in different sizes and shapes .
    • All cells have a cell membrane which is an outer covering that controls what comes into and out of a cell.
    • All cells have cytoplasm which is a gelatinlike material.
  • 3.
    • Only plants , algae , fungi , and bacteria have cell walls.
    • Cell walls are tough, rigid outer coverings that protect the cell and give it shape.
  • 4. Nucleus of a Cell
    • The nucleus is the control center of the cell because it holds all the genetic material which tells the cell what to do.
    • It is protected by a membrane called the nuclear membrane .
    • The nucleolus is inside the nucleus and this is where ribosomes are made.
  • 5. Organelles in the Cytoplasm
    • Organelles are tiny cell structures which carry out specific functions within the cell.
    • Examples include the Mitochondria,ribosomes , endoplasmic reticulum, golgi bodies, chloroplasts, vacuoles, lysosomes.
  • 6. Mitochondria
    • Mitochondria are rod-shaped organelles known as the “powerhouses” of the cell. They convert energy in food molecules to energy the cell can use to carry out its functions.
  • 7. Ribosomes
    • Ribosomes are very small grainlike structures that function as factories to produce proteins.
    • They may be attached to the endoplasmic reticulum or they may float in the cytoplasm.
  • 8. Endoplasmic Reticulum(ER)
    • The endoplasmic reticulum(ER) is a series of folded membranes or passageways that carry proteins and other materials from one part of the cell to another.
    • It may be rough or smooth. The smooth ER has no attached ribosomes . The rough ER has attached ribosomes.
  • 9. Golgi Bodies
    • The Golgi bodies are stacked, flattened membranes which receive proteins and other newly formed materials from the ER, package them, and distribute them to other parts of the cell.
    • Golgi bodies are like the UPS .
  • 10. Chloroplasts
    • Plant cells have chloroplasts which are green organelles that capture the energy from sunlight and use it to make food .
    • Chloroplasts make leaves green.
  • 11. Vacuoles
    • Vacuoles are the storage areas of cells.
    • Most plants have one large vacuole while animal cells may have one, more than one, or no vacuoles.
    • Vacuoles stores food and other materials needed by the cell.
    • They also store waste .
  • 12. Lysosomes
    • Lysosomes are small, round structures containing chemicals that break down certain materials in the cell.
    • Lysosomes are the cell’s cleanup crew.
  • 13. Cytoskeleton
    • Microtubules and Microfilament both make up the cytoskeleton framework. They both support the cell.
  • 14. Levels of Organization
    • Cells
    • Tissues
    • Organs
    • Systems
    • Organism