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Lecture 10

BIOL 1000 Lecture 10: Lecture 10

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University of Manitoba
Biological Sciences
BIOL 1000
Kevin G.Scott

o78P Eukaryotic cells are partitioned into functional components All eukaryotic cells are fundamentally similar to one another (very different from prokaryotes)  Nucleus is biggest difference between prokaryotes and eukaryotes Eukaryotes also contain various organelles (“little organs”) Perform specific functions Cell is wrapped in membrane made of phospholipids & proteins Each organelle is bounded by a membrane made of lipids and proteins (suit its function) 4 basic functional groups of organelles 1) Nucleus and ribosomes carry out genetic control of the cell 2) Organelles involves in manufacture, distribution, breakdown of molecules Endoplasmic  reticulum, Golgi apparatus, lysosomes, vacuoles, peroxisomes 3) Mitochondria (all cells) & chloroplasts (plant cells) are involved in energy processing 4) Structural support, movement, communication between cells  Cytoskeleton, plasma membrane, plant cell wall  Internal membrane of eukaryotic cell partitions it into compartments Cellular metabolism = chemical activity of cells, occurs within organelles  Many enzymatic proteins built into membranes of organelles Chemical conditions maintained in fluid-filled spaces within organelles Almost all organelles and other structures of animal cells are also present in plant cells Exceptions: No lysosomes and centrioles in plant cells o Some animal cells have flagella/cilia, only sperm cells of a few
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