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Auburn University
BIOL 1020
Biol1020-10.4-cell structures

Biol1020-10.4-cell structures - 4 October 2006 Cytoskeleton... 

4 October 2006  Cytoskeleton  Microtubules  Actin filaments (microfilaments)  Intermediate filaments  Microtubules  Hollow  Consists of individual “bricks” called tubulin molecules which are protein molecules—they come in pairs called “Tubulin dimer”=alpha tubulin and beta tubulin  13 rows of tubulin dimmers  proteins attach called microtubule-associated proteins (MAPs)  MAPs give microtubules their function  “motor” proteins: ♦ Kinesin ♦ Dynein  Form in Microtubule Organizing Centers (MOCs) ♦ Centrioles  Manufacture microtubules  Cilia/cilium ♦ Covered by plasma membrane ♦ Contains microtubules ♦ 9-2 organization ♦ for movement:  microtubules, dynein molecules, and ATP ♦ Kartagener’s Syndrome-Immotile cilia syndrome  Chrome bronchitis, partial hearing loss, sterility, reversed organs  It’s hereditary like ‘other’ disease  Microfilaments 

Unformatted text preview: ♦ Breakdown inactive proteins ♦ Motility is contraction Uses actin, mysosinfilaments, and ATP Plant Cells Cell wall ♦ Consists of cellulose and other… Primary wall=first wall Thicker wall= more rigid cell=more rigid/hard plant Middle lamella ♦ Made of pectin and pelcium pectate ♦ Glues cells together Plasmodesmata- cytoplasmic channels ♦ Connects one cell to another by allowing communication 4 October 2006 ♦ Vacuoles in plants Tonoplast is the vacular membrane It’s functions: ♦ Stores pigments ♦ Stores nicotine and other toxins Human cell Desinosome ♦ Welds animal cells together ♦ Made up of individual glycoprotein molecules(sugar protein) Gap junction ♦ Allows molecules to exchange between cells ♦ Connexon Pores in cell membrane...


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