BIOL 1202 Chapter : Biology 1202 Lect 2-1
Document Summary
Animalia: plantae, fungi, animalia, did king philip come over for gumbo sunday, domain, kingdom, phylum, class, order, family, genus, species, taxon (taxa) = the named taxonomic units at any level in the taxonomic hierarchy. Parsimony and occam"s razor: the most parsimonious tree is the one that requires the fewest evolutionary events or introductions (appearance of shared derived characters, on this most parsimonious cladogram, each key character originated (evolved) once. Prokaryotes are the smallest living things: viruses, 3 common parts, genome= genetic information, can be either single-stranded or double-stranded dna or rna. Immune system: three lines of defense, external barriers, skin, mucous membranes, keeps things from getting inside of the body, the mucous membranes are located in the nose, sinus areas, skin, physical barrier to microbial entry. Inhospitable environment for growth; dry, dead cells at the surface. Sweat/sebaceous glands secreting acids and natural antibiotics like lacti acid: three lines of defense. Innate defenses: non-specific external barriers, skin, physical barrier.
