A
Nutrients required in large amounts are called
Macronutrient
Phototrophs obtain energy from
Light
Refrigeration slows microbial growth because
Slows metabolism
Most bacteria grow best at which pH?
pH7
High salt environments favor
Halophiles
Micronutrients are mainly needed for
Enzyme function
Chemotrophs obtain energy from
Chemicals
Freezing food
Stops growth but doesn’t kill all
Acidophiles prefer which pH?
Acidic
Facultative anaerobes can grow
with or without oxygen
Which element is used to make ATP?
Phosphorus
Cold-loving bacteria are called
Psychrophilles
Obligate aerobes require
Oxygen
Communities of bacteria in slime
Biofilms
Biofilm communication is called
Quorum sensing chemicals
Nitrogen is needed to make
Proteins and nucleic acids
Most human pathogens are
MEsophilies
Catalase breaks down
Hydrogen peroxide
Obligate anaerobes will die in
Oxygen
Beneficial interaction between organisms is called?
Symbiotic relationship
Growth factors include
Vitamins and amino acids
Thermophiles grow best at
High temperature
Aerotolerant anaerobes
Survive oxygen but don’t use it
Time for the population to double
Generation time
Microaerophiles need
Small amounts of oxygen