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Transcript
A cell is a cell but how can you tell? Robert Hooke-1665 • Examined many living and non-living things under the microscope. • Living things seem to be made of “compartments” • He called these compartments, cells Cork is the outer bark of an evergreen oak Cells • Are made up by organelles or parts that have specific jobs. More info on size of cells • the Ostrich egg is the largest cell on Earth • It is about the size of a football • mycoplasma bacterium is the smallest cell in the world. • It is only ten micrometers Cell Membrane • the thin layer of protein and fat that surrounds the cell. Jello Model: Plastic ziploc bag Cytoplasm • the jellylike material outside the cell nucleus in which the organelles are located. Jello Model: gelatin Golgi Body • a flattened, layered, sac-like organelle that looks like a stack of pancakes • packages proteins and carbohydrates into vesicles for "export" from the cell. Jello Model: Folded hard ribbon candy Lysosomes • round organelles surrounded by a membrane and containing digestive enzymes. • digestion of cell nutrients takes place here Jello Model” M & M Candy Mitochondria • spherical to rodshaped organelles *the inner membrane is infolded many times • Gives energy to the cell Jello Model: raisins Nucleus • spherical body containing many organelles • controls many of the functions of the cell and contains DNA (in chromosomes). Jello Model: A plum Ribosomes • small organelles where proteins are made. Jello Model: Candy sprinkles Endoplasmic Reticulum It functions as a packaging system. It creates a network of membranes found through the whole cell • Smooth It acts as a storage organelle. For example: It is important in the creation and storage of steroids. • Rough Jello Model: Jello Model: Gummy worms Sour gummy worms-rough They are very important in the synthesis and packaging of proteins. Some of those proteins might be used in the cell and some are sent out. Endoplasmic Reticulum Vacuoles • Vacuoles are essentially enclosed compartments which are filled with water containing important stuff for the cell dissolved in it What do plant cells have that animal cells do not?” • Cell Wall • Chloroplasts Plant Cells Cell Wall-only in plants • A rigid structure that protects the plant • Provides structure and shape Chloroplasts • Capture sun light and chemically change it to sugar. • Chloroplasts are the food producers of the cell. Organelles of a Animal Cell Cell membrane Nucleus Ribosomes Cytoplasm Mitochondria Endoplasmic Reticulum Golgi Apparatus or bodies Vacuole Cytoplasm Lysosome Organelles of a Plant Cell Cell Wall Cell membrane Nucleus Ribosomes Chloroplast Cytoplasm Mitochondria Endoplasmic Reticulum Golgi Apparatus or bodies Vacuole Cytoplasm