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Cells & Diffusion

PART A

TermDefinition
Nucleus Controls all activities of the cell, growth and reproduction (both)
Cell Membrane Allows certain molecules to go in or out of the cell, molecules diffuse in or out of a cell, made up of 2 phosphorus layers interconnected (both)
Cell Wall Supports and protects the cell, does not allow molecules in or out (plant cell)
Chromosomes Proteins that contain DNA which has coded information for making molecules (both)
Rough Endoplasmic Reticulum Produces and stores proteins (both)
Smooth Endoplasmic Reticulum Produces and stores fats and oils (both)
Golgi Bodies Modifies and packages proteins from the rough endoplasmic reticulum with enzymes (both)
Ribosomes Helps rough endoplasmic reticulum to make proteins, it attached to rough endoplasmic reticulum (both)
Centrioles Helps with cell division, spindle fibres (animal cell)
Mitochondria Converts sugar into energy for the cell (both)
Cytoplasm Fluid in the cell, allows organelles to move around (both)
Vacuole Stores water, minerals and vitamins, much bigger in plant cells (both)
Lysosomes Breaks down: food, invading bacteria, old/damaged organelles (animal cells)
Chloroplasts Uses sunlight to make it's own food, photosynthesis, CO2+H2O+light-->sugar+O2 (plant cell)
Diffusion the process of movement of molecules under a concentration gradient
Osmosis The diffusion of water across a semi-permeable membrane.
Permeable A membrane that allows all substances to pass through.
Semi-permeable A membrane that allows only certain substances to pass through.
Non-permeable A membrane that does not allow any substances to pass through.
Created by: nanditasharma
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