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Chapter 3 The cellphoneular Level of Organization Pages 64 78 1. Parts of a prison cell: Fig.3.1 -100 trillion cells in body -Smallest funding unit cell -Smallest non-living unit atom -200 sport types of cells A. Plasma Membrane -Phospholipid bi scent level B. Cytoplasm -Region bound by plasma tissue stratum -Excludes nucleus C. Nucleus -Nuclear envelope -nucleolus -Ribosome assembly -Chromatin -Protein packages deoxyribonucleic savage into chromosomes 2. The Plasma Membrane: Fig. 3.2 -Fluid mosaic model -Not rigid -Consistency of olive oil A. The Lipid Bilayer -Imbedded proteins and cholesterin i. Phospholipids -Bilayer ii. Cholesterol -Determine permeability -Determine rigidity -More cholesterol more rigid iii. iv. Glycolipids -Sugar group disposed directly to lipids -Only on out(a) of doors layer B. Arrangement of Membrane Proteins i. constituent(a) Proteins -Difficult to remove from membrane -Most are trans membrane proteins ii. Transmembrane Proteins -Extend across both layers -Channels -Receptors iii. peripheral Proteins -On the surface proteins -Linked to lipids or central proteins -Easily removable iv.

Glycoproteins -Glucose chains attached to proteins -Most are trans membrane -2 to 60 monomers -Outside only v. Glycocalyx -Glycoproteins form the glycocalyx -Slippery layer on the outside of the cell -Cell identification -Cell to cell attachment B. Functions of Membrane Proteins: Fig. 3.3 i. Ion Channels -Integral protein -Na+, K+ -Large purpose in muscle concretion and nerve impulses -Most are ad hoc to one ion ii. Carriers -Some are send off proteins -Allow substances to move in iii. Receptors -Recognize a dilate ligand -Alters cell function in some way -Viruses get into cells by binding to receptors iv. Enzymes -Can be intact or...If you want to get a full essay, order it on our website: Orderessay

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