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Eukaryote Cell Organelles

Structure and Function

Emily Mizier-Barre

on 22 February 2011

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Transcript of Eukaryote Cell Organelles

Eukaroyotic Cell Organelles Nucleus Location: cytoplasm Structure: covered by nuclear envelope
inside containing nucleolus Function: control centre of cell
contains hereditary info (DNA) provides cells with a form of stored chemical energy (ATP) Function: Structure: Location: cytoplasm smooth outside, convoluted membrane
consists of innermatrix, intermembrane space, cristae Mitochondria Endoplasmic reticulum a network of interconnected canals through the cytoplasm
membrane can be rough or smooth Structure: Function: Location: cytoplasm Rough ER: synthesizes proteins
Smooth ER: synthesizes fats & steroids stores, processes, and packages proteins (coming from the rough endoplasmic reticulum) Location: cytoplasm Structure: stacks of flattened "balloons" (membrane sacs) Function: Golgi apparatus Centriole Function: Structure: Location: cytoplasm small protein bodies guide wires for attachment and movement of chromosomes during cell division Ribosome made of RNA + proteins
smallest organelles found in cytoplasm Structure: Function: Location: Rough endoplasmic reticulum protein synthesis Lysosome Location: cytoplasm Structure: small, spherical sacs contain a variety of enzymes that are able to break down large molecules that can then be used by the cell Function: controls cell shape, maintains intracellular organization, involved in cell movement Function: versatile network of fine protein filaments and microtubules Structure: Cytoskeleton Location: surface Cell membrane composed of a double layer (bilayer) of lipid molecules + proteins
Contain receptor sites to allow entry into the cell (i.e. viruses) Structure: Function: Location: surface regulates movement of materials in and out of the cell photosynthesis Structure: plastids that contain green pigment chlorophyll Function: Chloroplast Cell Wall Function: Structure: rigid layer made of cellulose protection and support Location: surface (plant cells) Vacuole Function: Structure: large fluid-filled compartment stores sugars, minerals, proteins, and water Location: cytoplasm (plant cells) Location: cytoplasm (plant cells) The nucleolus is involved in producing ribosomes. Contains its own DNA unlike that found in the nucleus. They are very small (20nm) but play a big role in the cell, making proteins. Disappears during mitosis and later reforms. Rough E.R. is prevalent in cells that specialize in secreting proteins. Move to opposite poles of the cell during mitosis, and spindle fibres start to form More than 30 different hereditary diseases have been linked to defective digestive enzymes in the lysosomes (ex. Tay-Sach's disease) Receptors and proteins are the bouncers of the cell club!
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