Flashcards

Microbio - Bacterial Nutrition

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Name some key macronutrients a describe their roles

Potassium - enzyme cofactor Magnesium - enzyme cofactor, complexes ATP, stabilises ribosomes & ATP Calcium - many roles eg. endospore heat resistance Iron - electron transport, enzyme cofactor

What are the two classifications of microbes based on their electron source?

Lithotrophs - get electrons from reducing inorganic compounds (eg. H2S, H2, NH4 , NO2-, Fe2 ) Organotrophs - obtain energy from organic compounds

What are growth factors?

Growth factors are compounds an organism cannot make themselves and must obtain from the environment/media Growth factors can be: amino acids, pyrimidines, purines & vitamins

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