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PART A: Cells etc.

PART A for study guide ( cells & diffusions)

TermDefinition
Nucleus controls all activities of the cell , growth & reproduction.
Cell Membrane allows certain molecules to go in or out of the cell, molecules diffuse in or out of the cell, made up of 2 phosphorous layers.
Cell Wall supports and protects the cell, doesn't let molecules in and 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 fat and oil.
Golgi Bodies modifies and packages protein, attached to rough endoplasmic reticulum.
Ribosomes helps rough endoplasmic reticulum to make protein, attached to endoplasmic reticulum.
Mitochondria converts sugar into energy.
Cytoplasm fluid in cells, allows organelles to move around.
Vacuole stores water, minerals & vitamins, much larger in plant cells.
Lysosome breaks down - food - invading bacteria - old / damaged cell
Chloroplast uses sunlight to make its own food, photosynthesis ( CO2 + H2O + light -> sugar + O2
Centrioles helps with cell division, spindle fibres come from here.
Diffusion movement 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 any molecule to diffuse across the membrane.
Semi-Permeable allows certain molecules to diffuse across the membrane.
Non-Permeable allows no molecules to diffuse across the membrane.
Created by: ylne
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