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Monera (Bacteria)

Chapter 20

QuestionAnswer
prokaryotic single cell, no nucleus or membrane bound organelles
eukaryotic multicellular, nucleus present and has membrane bound organelles
pathogen disease causing
asexual reproduction one parent only, produces identical offspring
binary fission asexual reproduction in bacteria. chromosome replicates, cell elongates, chromosomes move to either end, cell splits into two identical daughter cells
endospore tough wall spore that is capable of surviving harsh conditions
autotrophic bacteria that make their own food
heterotrophic bacteria that get food from outside themselves
antibiotic A chemical substance produced by one microorganism to prevent the growth of another microorganism
bioprocessing Bioprocessing is when Enzyme-controlled reactions are used to produce products such as yoghurts, cheeses, artificial sweeteners, vitamins and alcohol products
bioreacter A vessel in which biological reactions take place
batch culture A fixed amount of nutrient and bacteria are placed in a bioreactor in the beginning
continuous flow culture Nutrients are constantly added to the bioreactor throughout processing and products are constantly removed
the lag phase bacteria is adapting, little multiplication
the log phase plenty of nutrients, oxygen and space - multiply rapidly
the stationary phase death and production rates are equal, number of live bacteria remains constant
the decline phase death rate is increasing, lack of nutrients, oxygen and space
the survival phase only some bacteria survive
saprophytic bacteria feeds on dead and decaying matter
Created by: Kamilex
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