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Defence mechanisms in animals and plants
Member rating: No Rating | Words: | Submitted: Tue Jun 20 2006
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Defence mechanisms in animals and plants The aim of this report is to compare and contrast the molecular and cellular differences that enable animals and plants to protest themselves from organisms. In animals, the main forms of molecular defence that I'm going to write about are: * Cytotoxcicity; * Agglutination; * Wound closure; * Cascade reactions; And in plants the main molecular defence is cascade reactions. In animals, cellular defences involve various types of Leukocytes: phagocytes, cell-mediated cytotoxicity and together they synthesize and secrete many molecules defences (listed above). In plants, cellular defences involve chemicals compounds (alkaloids). Plant apparency theory and the resource availability hypothesis explain diversity of plant chemical defence. Cytotoxicity, a molecular defence were molecules are capable of entering some bacteria and cells of animal pathogens. Vertebrates and Invertebrates both have Lysozyme, an enzyme that splits bonds in bacterial cell walls. Antimicrobial peptides are another example of cytotoxicity that destroys many fungi, bacteria, and...
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