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Nucleus: Function: contains genetic material and controls the cell's activies Composition:membrane enclosed center of the cell Nucleolus Function: where ribosomes are made Composition: small dense center of the nucleus and is made of proteins Chromosomes/DNA Function: stores and transmits genetic info Composition: DNA and proteins packaged together Nuclear Membrane Function: Closely monitors which proteins, RNA and molecules move in and out of the nucleus Composition: porous double membrane Centrioles Function: helps organize cell division in animals Composition: spindle-like structures found near the nucleus Cytoplasm Function: containes organelles Composition: Fluid between nucleus and cell membrane Smooth Endoplasmic Reticulum Function: containes collections of enzymes that perform specialized tasks like the synthesis of phospholipids, the detox of drugs and transport in the cell Composition: a membrane system Rough Endoplasmic Reticulum Function: makes proteins that are exported from the cell Composition: membrane system dotted with ribosomes Ribosome Function: assembe proteins according to genetic info in RNA Composition: small particles of RNA and proteins Golgi Apparatus Function: Involved in all packaging and modification of proteins for use in the cell or export Composition: stack of membranes and has peices that bud off Mitocondria Function: powerhouse of the cell for it changes chemical energy into usable energy or ATP Composition: has a double membrane and highly folded inner membranes Chloroplast Function: converts the sun's energy into chemical energy (like glucose and sugars) Composition: Has a double membrane and contains stacks of membranes conatining chlorophyll Lysosome Function: useful in cell digestion, breakes down cell junk Composition: small organelles filled with strong enzmes Small Vacuole Function: holds stored materials like water, salt Composition: pouch Cental Vacuole Function: storage of salts and water, also provides turgor pressure for the cell which keeps the cell supported Composition:A large sack-like organelle in the center of a plant cell Cell Membrane Function: protects the cell and regulates what enters and exits Composition: lipid bilayer with proteins and other thngs in it Cilia/Flagella Function: work to move the cell and are part of the cells exoskeleton Composition: short hair like projections/long wiplike tail Cytoskeleton Function: Helps the cell to move and maintain its shape Composition: network of proteins and filaments and microtubules Cell Wall Function: provides support and protection for the cell Composition: often made from cellulose, a polysaccaride, and proteins