cell structure

cell structure - Basic Structure of a Cell...

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1 Basic Structure of a Cell copyright cmassengale
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2 Introduction to Cells Introduction to Cells Cells are the basic units of organisms C ells can only be observed under microscope Basic types of cells: Animal Cell Plant Cell Bacterial Cell copyright cmassengale
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3 Number of Cells Organisms may be: Unicellular – composed of one cell Multicellular- composed of many cells that may organize copyright cmassengale
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4 Prokaryotes include bacteria & lack a nucleus or membrane-bound structures called organelles Eukaryotes include most other cells & have a nucleus and membrane- bound organelles (plants, fungi, & animals) Cells May be Prokaryotic or Eukaryotic copyright cmassengale
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5 Prokaryotes Nucleoid region contains the DNA Cell membrane & cell wall Contain ribosomes (no membrane) to make proteins in their cytoplasm copyright cmassengale
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6 Eukaryotic Cell Contain 3 basic cell structures: Nucleus Cell Membrane Cytoplasm with organelles copyright cmassengale
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7 Two Main Types of Eukaryotic Cells Plant Cell Animal Cell copyright cmassengale
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8 Organelles Organelles Very small size Can only be observed under a microscope Have specific functions Found throughout cytoplasm copyright cmassengale
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9 Organelles Found in Cells Examples of Organelles include: Endoplasmic reticulum (rough & smooth) – canals for movement Golgi Bodies – wrap & export proteins Nucleolus – makes ribosomes Lysosomes – digests & gets rid of wastes Ribosomes – makes proteins copyright cmassengale
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10 Golgi Bodies Stacks of Stacks of flattened flattened sacs sacs Have a shipping side & Have a shipping side & a receiving side a receiving side Receive & Receive & modify modify proteins proteins made by ER made by ER Transport vesicles Transport vesicles with with modified proteins modified proteins pinch off the ends pinch off the ends Transport vesicle copyright cmassengale
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11 Lysosome Contain digestive Contain digestive enzymes enzymes Break down food and Break down food and worn out cell parts for worn out cell parts for cells cells Programmed for cell Programmed for cell death (lyse & release death (lyse & release enzymes to break down enzymes to break down & recycle cell parts) & recycle cell parts) copyright cmassengale
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cell structure - Basic Structure of a Cell...

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