Outline 6.doc - organelles(FigA.2.00(Slide1 o Organelle...

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Eukaryotic Cell Structure Defining features of eukaryotic cells Eukaryotic cells are characterized by the presence of membrane-enclosed  organelles ( Fig A. 2.00 ) (Slide 1) o Organelle Little organ Compartment within cell where “distinct” metabolic reactions  occur E.g. chloroplasts, mitochondria Structural Components Cytoplasm and cytoskeleton o Cytoplasmic matrix Aqueous (~70% water) Harbors oranelles and filamentous components of the cytoskeleton  ( Fig 25.30a ) (slide 2)  Actin microfilaments Tubulin microtubules Intermediate filaments Cytoskeleton not obvisous in most prokaryotes Endoplasmic Reticulum: role in metabolism and transport of proteins and lipids  (ER;  Fig. App. 2.1,14 ) (slide 3 and 4) o Network of tubules and flat sacs involved in protein and lipid transport o Two forms: Rough ER: outer surface studded with ribosomes
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