Memory Game Microbiology chapter 3Online version Cell structure by misael Lopez Plasma Proteins Helps maintain the shape of a cell externally and protects it from physical or chemical damage. A rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. Bacterial cell wall •Structural support •Transport of molecules •Receptors for hormones •Surface antigens Cell membrane - Thin peptidoglycan layer in the periplasmic space - large periplasmic space A dense gelatinous matrix composed of 70% to 80% water. the site for most of the enzymatic reactions and metabolic activity of the cell. - identifies bacteria as either gram stain positive or negative - a fluid mosaic made up of three types of organic molecules. - a semipermeable membrane surrounding the cytoplasm of a cell Gram positive Gram negative Very dynamic and capable of reorganization. Helps cells maintain their shape Cell wall Cytoskeleton Cytoplasm - thick peptidoglycan layer, external to plasma membrane.
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