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Chap. 2-1 Vocabulary Cell Wall – Tough rigid outer coverings, protects the cell and gives it shape. [Wall of the house] – (Plant cells only) Cell Membrane – Protects the cell and regulates interactions within the cells environment. [Door of the house] - (Both plant and animal cells) Organelles – Structures in the cytoplasm of the Eukaryotic Cells [All the stuff in the house - (Both plant and animal cells) Cytoplasm – The jellylike material that contains the organelles. [Air within the house] - (Both plant and animal cells) Nucleus –An organelle that directs and controls the activities of the cell. [Homeowner of the house] - (Both plant and animal cells) Nuclear Membrane – A membrane surrounding the nucleus that protects it, and regulates The materials that go into and out of the nucleus. [Clothes and skin of the Homeowner] (Both plant and animal cells) Chloroplast – Organelles that use Carbon Dioxide, Water and Light to make energy for the cell. [Kitchen of the house] – (Plant Cells only) Mitochondria – Organelles that break down food & releases energy. [Fireplace and Electricity within the house] - (Both plant and animal cells) Ribosomes – Makes proteins. Proteins are substances involved in most cell activities. [Oven/Grill/Microwave of the house] - (Both plant and animal cells) Endoplasmic Reticulum – Folded membranes that transport materials within the cell. [Hallway or Pipes within the house] - (Both plant and animal cells) Golgi Bodies, Golgi Complex or Golgi Apparatus – Transports materials both inside and outside of the cell. [Backpack or luggage of the house] - (Both plant and animal cells) Vesicles – Deliver substances from the Golgi Bodies to other areas both inside and outside the cell. [Laundry Basket or Storage crate] - (Both plant and animal cells) Vacuole – A storage place for food, water & wastes. [Refrigerator, Closet, Pantry in a house] (Both Plant and animal cells) Lysosomes – Contain chemicals that break down wastes, food and worn out cell parts. [Garbage disposal or recycle container within a house] - (Both plant and animal cells) Volume – The space inside of an object or the amount an object can hold. V=LxWxH. [The square footage of a house or a room in the house] - (Both plant and animal cells) Levels Of Organization Cell – The basic unit of life able to perform life functions. [A Brick of the house] Tissue – A group of similar cells working together to do a job. [Walls in the house] Organ – A group of tissues working together to do a job. [A room in a house] Organ System – A group of organs working together to do a job. [A floor or wing of a house] Organism – A group of organs systems working together to do a job. [The house]