Lecture 5 - Organization of the Cytoplasm cytosol vs....

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Organization of the Cytoplasm cytosol vs. organelles
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Two ‘Categories’ of Organelle 1. Membranous e.g. Plasma membrane Nucleus Mitochondria 2. Non-Membranous e.g. Cytoskeleton Ribosomes
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Non-Membranous Organelles - Cytoskeleton A. Microfilaments - strands of actin (protein) 1. Connect organelles to membranes 2. Influence cell motility and shape B. Intermediate filaments – stands of keratin 1. Structural stability C. Microtubules - strands of tubulin 1. Influence cell structure and shape 2. Motility - organelle movement - cilia/flagella
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keratin Non-Membranous Organelles - Cytoskeleton
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B. Cilia and Flagella Cell motility A. Centrioles/ Centrosomes Cell motility/Cell division Non-Membranous Organelles
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C. Microvilli Increase surface area of plasma membrane D. Ribosomes Site of protein synthesis Non-Membranous Organelles
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Membranous Organelles 1) Nucleus – in a later lecture 2) Mitochondria 3) Endoplasmic reticulum Rough ER Smooth ER 4) Golgi Apparatus or Complex 5) Lysosomes 6) Peroxisomes
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Mitochondria - major site of cell energy metabolism Membranous Organelles - Mitochondria
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This note was uploaded on 09/11/2011 for the course PSIO 201 taught by Professor Stanescu during the Summer '08 term at University of Arizona- Tucson.

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Lecture 5 - Organization of the Cytoplasm cytosol vs....

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