![]() Rough Endoplasmic Reticulum (rER): prominent in cells that make large amounts of proteins to be exported from the cell Covered with ribosomes 21 Structure: a system of membranous tubules and sacs Function: intercellular highway (a path along which molecules move from one part of the cell to another) 20 Rigid wall made up of cellulose, proteins, and carbohydrates Function: Permeable boundary around the outside of the plant cell membrane that provides structure and support 17Ī network of thin, fibrous elements made up of microtubules and microfilaments Function: acts as a support system for organelles maintains cell shape 18Ĭonsist of two subunits made of protein and RNA Function: location of protein synthesis 19 Membrane bound sphere that contains DNA and nucleolus Function: storage center of cell’s DNA manages cell functions 16 ![]() Function: selectively permeable boundary between the cell and external environment 15 Proteins that function as channels, markers, and receptors. 14 14ġ5 Cell Membrane Structure: Function: phospholipid bilayer ![]() 2.3.1 and 2.3.2ġ4 Animal Plant Cell Wall Chloroplasts Polysaccharides Vacuole ShapeĢ.3.4 Cell Wall No, only plasma membrane Yes, and plasma membrane Chloroplasts no yes Polysaccharides Glycogen Starch as storage Cellulose for structure Vacuole Large fluid filled present Shape Able to change shape. “naked” Size 5-100 µm µm Organization Single and multicellular, some have cell walls single-celled, all have cell walls Division Mitosis and Meiosis Binary Fission Organelles membrane bound organelles like mitochondria no organelles, different ribosomes (70S) Examples plants, animals, protists, fungi bacteria, archaea 4 4ĩ Prokaryotic Cells divide by binary fissionġ1 Drawing of animal cell. Have cytoplasm cytoplasm = cytosol + organelles contain DNA have ribosomes tiny “organelles” that make proteins using instructions contained in genesĭNA Associated with protein in membrane-bound nucleus single circle. Types of cells Prokaryote bacteria cells Eukaryote animal cells Eukaryote plant cellsģ Cell characteristics All cells: are surrounded by a plasma membrane 2 Prokaryote bacteria cells Eukaryote animal cells
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