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Cell Organelles organelle = tiny organ. If you think of a cell like a city, each organelle would be a building; with its own structure and job to do. NUCLEUS. Description of Structure Spherical body usually near the center of a cell Function of Structure Controls all cells activities - PowerPoint PPT Presentation
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Cell Organellesorganelle = tiny organ
If you think of a cell like a city, each organelle would be a building; with
its own structure and job to do.
NUCLEUS• Description of Structure– Spherical body usually
near the center of a cell
• Function of Structure– Controls all cells activities– Directs Growth and
Reproduction– Control Center
• City Hall
NUCLEAR MEMBRANE• Description of Structure– Thin, two layered
(porous) structure surrounding nucleus
• Function of Structure– Controls movement of
materials in and out of nucleus
– “Nuclear Gatekeeper”• City Hall Security
NUCLEOLUS• Description– Irregular/ Spherical bodies
within nucleus
• Function– Storehouse of RNA– Synthesis of RNA to make
Ribosomes– Disappears during cell
reproduction
• Mayor’s Office inside City Hall
CHROMATIN THREADS
• Description– Long, tin coiled fibers
containing DNA and Protein
• Function– Contains DNA code that
controls all cell reactions– Carriers genetic code that
determines heredity.
• City Blueprints
https://www.youtube.com/watch?v=9kQpYdCnU14
CELL MEMBRANE• Structure– Flexible, thin porous two-
layered structure surrounding cell
• Function– Controls movement in and
out of cell– Shapes and protects the
cell
• Security Fence around City
CYTOPLASM• Structure– Semifluid/ jelly-fluid material of cell surrounding
nucleus• Function– Main storehouse of chemicals and organelles– Where chemical reactions of life occur
• City Grounds/ Lawns
ENDOPLASMIC RETICULUM (E.R.)• Structure– Complex series of membrane
channels that form branching, net-like maze from cell membrane to nuclear membrane
• Function– Transport of materials
throughout cell– Divides cell into
compartments
• Highway System
RIBOSOMES• Description– Tiny dense bodies which lie on the edges of E.R.
or in clusters in cytoplasm (Free ribosomes)• Function– Site of Protein Synthesis
• Factories
GOLGI COMPLEX• Structure– Stack of flattened saccules.
“Stacks of stacks.”• Function– Synthesis, Storage, Secretion
of Large Molecules– Package and deliver
molecules outside of cell– May manufacture lysosomes
• Post Office or Fed-Ex Center
https://www.youtube.com/watch?annotation_id=annotation_937748&feature=iv&src_vid=LP7xAr2FDFU&v=fKEaTt9heNM
LYSOSOMES• Structure–Oval, bag-like structures containing small
particles and enzymes• Function– “Suicide Sac”– Digest food particles– Digest worn-out organelles
• Recycling Center
https://www.youtube.com/watch?v=ekdIEpSf-1I
VACUOLES• Structure– Small bubble or cavities in the
cytoplasm– Clear/ Colorless
• Function– Storage of Water and Food– Helps maintain internal pressure
• City Water tower/ Warehousehttps://www.youtube.com/watch?v=_TULYTNhEoE
ENDOCYTIC VESICLE• Structure– Sac-like infoldings of cell membrane
• Function– Transport of food/large particles into cell– Large Particle Intake– Forms Vacuoles
• Food Trucks
MITOCHONDRIA• Structure– Spherical or Sausage
shaped bodies with shelf-like membranes (cristae)
• Function– Energy Production– High Number in Active
Cells (muscles)• Electrical Powerplant
https://www.youtube.com/watch?v=RrS2uROUjK4
CENTROSOME WITH CENTRIOLES• Structure– Spherical body edges the
nucleus which contains 2 cylindrical centrioles
– T- shaped• Function– Helps DNA separate during
cell division–Where Microtubules are
Made– Forms Spindle Fibers
• City Construction Office
MICROTUBULES
• Structure– Tiny tube-like structures– Hollow, rigid
• Function– Acts like Cell Skeleton,
Give cell shape–Makes cell rigid
• Scaffolding, Iron Beam, Nails, etc.