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plantanimalcellfordiscussion-160201081347 (1).pptx

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plantanimalcellfordiscussion-160201081347 (1).pptx

  1. 1. Plant & Animal Cells
  2. 2. The Cell Story
  3. 3. • Robert Hooke- in 1665 he discovered the cell composition of cork and introduced the word “cell” to science • Anton von Leeuwenhoek was first to observe one celled living things. Examples of these were bacteria and
  4. 4. • Robert 1830, he Brown- in identified a dark-stained structure at the center of every cell he observed. He referred to such structure as the nucleus.
  5. 5. The Cell Theory • All living things are made up of cells • Cells are the basic unit of structure and function in living things • Living cells come only from other living cells • Rudolph Virchow Matthias Schleiden Theodor Schwann
  6. 6. • that all plants were composed of cells 1838- a German • botanist discovered 1839- a German zoologist discovered that all animals were composed of cells • Rudolph Virchow 1856- a German physician was doing an experiment when he found that all cells come from other existing cells Schwann Matthias Schleiden Theodor Schwann
  7. 7. Organelles maintain the life processes of the cell, including: Intake of nutrients Movement Growth Response to stimuli Exchange of gases Waste removal Reproduction The Purpose of Organelles
  8. 8. •Cytoplasm refers to the jelly-like material with organelles in it. If the organelles were removed, the soluble part that would be left is called the cytosol. It consists mainly of water with dissolved substances such as amino acids in it.
  9. 9. • Cytoskeleton Is a network of thin fibrous filaments that serve as the “bones and muscles” of cells. Microfilaments are cytoskeletons that are also attached to the cell membrane. They are responsible for giving the cell its shape. Microtubules are cytoskeletons that are not connected to the cell membrane. They serve as the anchorage of the organelles in the cell
  10. 10. • Nucleus it is a membrane organelle, spherical in bound shape enclosed by a nuclear envelop. Most of the activities of the cell is directed by the nucleus. • Nucleolus dark spot in the middle of the nucleus that helps make ribosomes Nucleolus Nucleus Nuclear Envelope
  11. 11. • Ribosomes are found on the endoplasmic reticulum. Together they help in manufacturing proteins for the cell following instructions of the nucleus Ribosome
  12. 12. • Endoplasmic Reticulum is a membranous structure forming a of canals network through proteins which and other are molecules transported Smooth Endoplasmic Reticulum Rough Endoplasmic Reticulum
  13. 13. • Rough Endoplasmic Reticulum is an organelle where most of the Proteins ribosomes attached. produced in the ribosomes needs to be transported through the Rough endoplasmic Smooth Endoplasmic Reticulum areRough Endoplasmic Reticulum
  14. 14. • Smooth Endoplasmic Reticulum that transports large molecules inside the cell. Smooth Endoplasmic Reticulum is a branching canal (without ribosomes)Rough Endoplasmic Reticulum
  15. 15. • Golgi Complex they are flattened stacks of They function as membrane bound sacs. the packaging unit, the protein formed by the endoplasmic reticulum are packed into small membrane sacs called vesicles. Golgi Complex
  16. 16. • Lysosomes that contain enzymes organelles hydrolytic (lysozymes) bacteria, that digest viruses, complex food particles, and damaged cell components that could be harmful to the cell, and may interfere with
  17. 17. Cell suicide (suicide is bad for cells, but good for us!) (The lysosome is not found in plant cells)
  18. 18. • Mitochondria are small, double- membraned, spherical or sausage-shaped organelles involved in energy. mitochondria popularly known the powerhouse the production of The is as of the cell. Mitochondria
  19. 19. Plant Cell
  20. 20. Cell Wall • Is a stiff non-living wall that surrounds the cell membrane made of cellulose Protects the cell from injury Gives the plant cell a fixed shape Cell wall is fully permeable • • •
  21. 21. • Cell wall is an additional boundary surrounding the cells of plants, fungi, bacteria, and some protozoans. The cell wall of plant cells is a very Cell Wall tough substance made up of cellulose, which support the cells and protects it from injury. The wood of fully-grown plants is basically made up of cell
  22. 22. • Vacuole a small cavity cytoplasm bound by membrane a single and containing water, food, or metabolic waste Vacuol in the e of a cell,
  23. 23. • Plastids are double-membraned organelles found in plant cells, some protozoans, and bacteria. Chloroplastids or chloroplasts are the most common plastids in green plants. It contains green pigments Chloroplast called chlorophyll. are the energy- capturing centers in plant cells, which are involved in the manufacture of the cell’s food, a
  24. 24. • Chloroplasts chlorophyll containing organelles found in cells Chloroplasts of green plants and some protist; capture light energy and converted it to chemical energy
  25. 25. Chloroplasts Think of the chloroplast as the solar panel of the plant cell.
  26. 26. •Vesicles are organelles that carry materials in and out of the These food materials particles by the cell and cell. include needed waste products secreted by the cell.
  27. 27. Plant Cell Chloroplasts Cell Membrane Cell Wall Nucleolus Nucleus Rough ER Vacuole Smooth ER Golgi Bodies Mitochondria Ribosomes Cytoplasm
  28. 28. Two Fundamentally Different Types of Cells A prokaryotic cell A eukaryotic cell
  29. 29. Eukaryotes and Prokaryotes
  30. 30. Animal and Plant Cells Have More Similarities Than Differences

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