In the table below, describe the composition and macromolecule structure for each of the extracellular or cell interaction components. Do not include specific amino acids or monosaccharides. Also, describe the function(s) of each cell component.
Computer typed, please.
Homework Answers
| CATEGORY | GENERAL COMPOSITION AND STRUCTURES | FUNCTIONS |
| Bacterial cell walls | Made of peptidoglycan in which the alternating polysaccharides(NAM and NAG) are linked by peptides | It protects the bacteria from external stresses and maintains osmolarity and shape and interity of the organism |
| Plant cell walls | Made up of cellulose , pectin and hemicellulose and also amounts of enzymes,proteins and lignin |
Protection of the cell from various stress factors. Maintniing of structure,integrity and support |
| EXTRACELLULAR MATRIX | ||
| Structural proteins | Structural proteins are the fibrous proteins mainly collagenand elastin in their precursor state | The differentiation of cells like endotheilal ,epithelial and the smooth muscles is promoted by these proteins |
| Structural polysaccharides | Glycosaminoglycans which are a part of preoteoglycans and heparin sulfate |
Storage of growth factors Hydartion of the matrix (ECM) Heparin sulfate : cell proliferation,blood coagulation |
| Ahesion proteins | Laminin and fibronectin |
Fcailitates the motion of cells during processes like repair after injury Provides tensile strength |
| Integrins | Integrin is made of two subunits (alpha and beta) which are heterodimers in a noncovalent fashion forming a binding head for a ligand | Provides mechanical support by facilitating the attachment of these molecules to the ECM |
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