Define the following vocabulary words in your own word

Define the following vocabulary words in your own word:

intrinsic growth factors

extrinsic growth factors

acidophile

alkaliphile

stress proteins

sigma factors (proteins)

water activity (Aw)

oxidation-reduction potential (Eh)

oxygen toxicity

superoxide dismutase

peroxidase

catalase

fastidious

psychrotrophic

mesophilic

thermophilic

obligate anaerobe

aerotolerant anaerobe

bacterial fission

microbial biota

metabolism

catabolism

anabolism

chemotroph

chemoheterotrophs

transcription

translation

protein assembly

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