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Cells and Diffusion

Part A:

TermDefinition
Nucleus - Controls all activities of the cell; growth and reproduction.
Cell Membrane - Allows certain molecules to go in our out the cell. - Molecules diffuse in or out of a cell. - Made up of a 2 phosphorus layers interconnected.
Cell Wall - Support and protects the cell; does not allow molecules in or out.
Chromosomes - Proteins that contain DNA which has coded information for making molecules.
Rough Endoplasmic Reticulum - Produces and stores protein.
Smooth Endoplasmic Reticulum - Produces and stores fats and oil.
Golgi Bodies - Modifies and packages proteins from rough ER (Endoplasmic reticulum) with enzymes.
Ribosomes - Helps rough ER (Endoplasmic Reticulum) make proteins - Is attached to rough ER (Endoplasmic Reticulum)
Centrioles - Helps with cell division (mitosis) -Spindle fibres come from here
Mitochondria - Converts sugar into energy
Cytoplasm - Fluid in the cell; allows organelles to move around
Vacuole - Stores water, minerals, and vitamins - Much bigger in plant cells
Lysosomes - Breaks Down - Food - invading bacteria - old damaged organelles
Chloroplast - Uses sunlight to make its own food - Photosynthesis--> Co2 + H20 + Light --> Sugar + O2
Diffusion - Movements of molecules from areas of high concentration to low concentration.
Osmosis - Movement of water molecules from high concentration of water to low concentration of water.
Permeable - Allows only molecule to diffuse across membrane.
Semi-permeable - Allows certain molecules to diffuse across membrane
Non-permeable - Allows no molecules to diffuse across membrane.
Created by: filmocity
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