lecture 22 alto
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| deletion mutant | organism with the type of mutation characterized by the loss of a portion of its genome
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| best environment in which microaerophiles grow | grow best in low O2 tension but can tolerate normal atmospheric levels, possess SOD but NOT catalase
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| autotrophs | derive energy from oxidizing inorganic substrates
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| heterotrophs | use organic carbon components as energy (include all medically important bacteria)
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| characteristics of log phase | cells are large, rapidly growing and thus susceptible to agents that target cell division steps, rich in ribosomes and metabolically active
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| characteristics of stationary phase | cells are usually smaller, less active metabolically and more reistant to toxic agents
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| start codon | ATG
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| fever kills mesophiles (optimal temp is 37 deg C) |
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| direct measurement method of bacterial growth | hemocytometer (slide with grid for counting bacteria)
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| indirect measurement method of bacterial growth | turbidity of broth, bacterial dry weight
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| semi-diploid or merodiploid | occurs when a copy of just one single gene is inserted into a bacterium via plasmid or other methods
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