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micro test 1

TermDefinition
mullin definition of microbiology 1. organisms/biological agents: bacteria, archaea, fungi, protozoa, microscopic algae, small metazoans (worms), viruses, viroids, virinos, prions 2. specialized methods & instruments used for manipulation microorganisms and infectious agents
cellular entities 1. prokaryotes: bacteria & archaea 2. eukaryotes: protists (protozoa & microscopic algae) & fungi (yeast) & metazoan worms (filarial worm)
acellular infectious entities 1. viruses 2. single type of biopolymer: viroids (rna) & prions (protein)
organelles membrane-bound compartments ONLY in eukarotic cells
cell wall polymers prokaryotic cells have unique cwp's bacteria: peptidoglycan archaea: pseudomurine &/or fiberous proteins
cell membranes of euk vs pro euk: sterols pro: no sterols
chromosomes euk: several + linear chromosomes pro: single circular chromosome
gene expression euk: more protein factors, mrnas undergo splicing. transcription in nuc, translation in cytoplasm pro: transcription and translation coupled
size euk vs pro pro usually much smaller
defining feature of euk vs pro membrane bound nucleus in euk only
producers of biologically relevant material cyanobacteria & microscopic algae: photosynthesis ultimate source of food for marine animals
biological cycling bacteria dominate: transformation of N, C, O, S, P, metals, & organic compounds (biopolymers from induced lysis of bacteria during blooms)
food monitored for 1. disease causing microorganisms (pathogens) 2. inappropriate miroorganisms (ruin taste/smell)
Created by: hkulba
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