Prokaryotic Cells 0.0 / 5 ? BiologycellsInternational BaccalaureateCIE Created by: Jamie LudfordCreated on: 05-10-13 14:44 Characteristics of Living Organisms UNICELLULAR NO MEMBRANE BOUND ORGANELLES EG. E COLI 1 of 8 CELL WALL Made of PEPTICLOGLYCAN (polymers of modified sugars linked by short chain polypeptides = net like multilayered structure) protects cell maintains shape stops bursting 2 of 8 PLASMA MEMBRANE Made of phospholipids partially permeable controlls entry & exit pumps substances in/out ACTIVE TRANSPORT 3 of 8 PILI made of protein pulled in and out by ratchet mechanism cell to cell adhesion exchanging DNA ( conjugation) 4 of 8 FLAGELLA protudes from cell wall propells cell solid and inflexible 5 of 8 CYTOPLASM fills plasma membrane water with dissolved substances contains enzymes and ribosomes chemical reactions of metabolism 6 of 8 RIBOSOMES smaller than eukaryotic ribosomes involved in proteinsynthesis 7 of 8 NUCLEOID Cytoplasm with DNA Total DNA is fewer than eukaryotic cells Fewer ribosomes and proteins - LESS DENSE 8 of 8
Comments
No comments have yet been made