the basic structure and function of cells
DESCRIPTION
This presentation discusses the basic parts of an animal cell and plant cells for third grade.TRANSCRIPT
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The Basic Structure and Function of Cells
By Ita P. Rodríguez
3rd Grade
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Definition of Cells
• Cells are the basic building blocks of living organisms
–Just like brick can be a building block of a house
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Definition of Cells
• Cells are so small you cannot see them with your naked eye
–you need a microscope
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Purpose of Cells
• The main purpose of a cell is to organize
–Cells hold different pieces and each cell has a different set of jobs
–Cells are small compartments that hold all of the biological equipment necessary to keep an organism alive and successful on Earth
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Purpose of Cells
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Types of Cells
• There are many types of cells–They can have different shapes and sizes
Smallest Cells: Longest Cells: Biggest Cells:
6 inches long, 5 inches wide, 3 pounds
Ostrich Egg
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Types of Cells
• There are many types of cells–We will discuss animal cells and plants cells
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Animal Cells
• Animal cells are eukaryotic (it means they have a nucleus)
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Vacuole
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Cell Parts
• Nucleus: controls the cell–It helps control eating, movement, and
reproduction just like a brain in animals–The nucleus is not always in the center of the
cell, but you won't find it near the edge of a cell because it's dangerous
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Cell Parts
• Mitochondrion: gives the cell energy –converts energy stored in food into usable
energy for work
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Cell Parts
• Vacuole: contains the waste or trash
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Cell Parts
• Ribosomes: makes the proteins for the cell
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Cell Parts
• Golgi Apparatus: packs protein–it receives, processes, packages, and ships
protein
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Cell Parts
• Cytoplasm: jelly-like fluid that holds the cell in place
–contains salts, minerals and organic molecules–surrounds the other parts
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Cell Parts
• Cell Membrane: the structure that separates the inside of the cell from the outside of the cell
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Cell Parts
• Lysosome: purpose is to digest things–breaks down food particles, invading objects,
or worn out cell parts
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Plant Cells
• Plant cells are eukaryotic (it means they have a nucleus)
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Plant CellsRibosomes
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Cell Parts
• Cell Wall: purpose is to help the plant keep its shape
–It's like taking a water balloon and putting it in a cardboard box. The balloon is protected from the outside world.
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Cell Parts
• Chloroplast: are the food producers of the cell
–they create sugars that the plant uses
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Comparing Animal and Plant Cells
• Look closely at the similarities and differences between an animal cell and a plant cell
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