Organelles in an Animal Cell

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Organelles in an Animal Cell

  1. 1. What’s Inside a Cell?
  2. 2. Animal Cells • Found in every living animal. • Gives the animal its STRUCTURE and lets the animal FUNCTION. • Can be SPECIALIZED to do certain jobs. • Can be different sizes and shapes.
  3. 3. What are organelles? • Tiny structures inside a cell. • They carry out specific jobs within the cell. • Kind of like organs for a cell.
  4. 4. CELL MEMBRANE • The cell membrane is the outer doors of the cell. It forms the outer boundary that separates the cell from its surroundings. FUNCTIONS: • It lets things in and out of the cell (like doors). • It holds everything together.
  5. 5. CYTOPLASM • A jelly-like fluid that contains all of the organelles of the cell. It is surrounded by the Cell Membrane. FUNCTIONS: • Holds all the organelles inside of the cell in a moving fluid.
  6. 6. CYTOPLASM CELL MEMBRANE
  7. 7. NUCLEUS • The “brains” or control center of the cell. It is a large oval structure. FUNCTIONS: • Produces proteins to control all of the cell’s activities
  8. 8. Nucleus Rough ER
  9. 9. Nucleolus • A small oval structure in the Nucleus that makes Ribosomes. FUNCTIONS: • To make Ribosomes.
  10. 10. NUCLEUS = the whole peach NUCLEOLUS = the pit
  11. 11. VACUOLES • Large water-filled sacs floating in the Cytoplasm. Like storage areas for the cell. Not found in all animal cells. Some cells have more than one. FUNCTIONS: • Store food and other materials needed by the cell.
  12. 12. VACUOLE
  13. 13. MITOCHONDRIA • Rod-shaped structures found in the Cytoplasm. Known as the “powerhouses” or batteries of the cell. FUNCTIONS: • They convert food energy into energy the other organelles use to do their job.
  14. 14. MITOCHONDRIA
  15. 15. ENDOPLASMIC RETICULUM (ER) • A maze of passageways in the Cytoplasm. TWO KINDS OF ER IN ANIMAL CELLS: 1. Rough ER – Have Ribosomes attached 2. Smooth ER – No Ribosomes attached FUNCTIONS: • To carry proteins and other materials from one part of the cell to other parts. • Many of the cell’s chemical reactions occur here.
  16. 16. ENDOPLASMIC RETICULUMROUGHER SMOOTHER
  17. 17. LYSOSOMES • Small round structures found in the Cytoplasm. They contain digestive enzymes. They are like the clean-up crew. FUNCTIONS: • They break down materials with their digestive enzymes. • Break down large food particles into smaller ones. • Break down old cell parts and recycle • them.
  18. 18. LYSOSOMES Chemicals
  19. 19. RIBOSOMES • Small grain-like bodies found on the Rough ER and floating around the Cytoplasm. They are like protein factories. There are more ribosomes in a cell that any other organelle. FUNCTIONS: • They make Proteins
  20. 20. A Whole Ribosome
  21. 21. GOLGI COMPLEX • Flattened sacs and tubes found in the Cytoplasm. Like the cell’s mail room. FUNCTIONS: • Receives proteins from other Smooth ER. • Packages the proteins up. • Sends them to other parts of the cell.
  22. 22. GOLGI COMPLEX
  23. 23. Cytoskeleton • A web of protein in the cytoplasm FUNCTION: • Acts as a muscle and a skeleton • Keeps the membrane from collapsing • Helps some cells move
  24. 24. CELL WALL • The outermost organelle of a cell (in plant cells) that is made of cellulose (a sugar) FUNCTION: • Allow plants to stand upright • Some take in water
  25. 25. Chloroplast • A green organelle in plant cells made of two membranes and contain their own DNA FUNCTION: • Where photosynthesis takes place
  26. 26. ORGANELLES IN AN ANIMAL CELL

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