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The Microworld

Across
Water Activity
Some pathogens require this to grow while others grow in its absence
Includes illness-causing microorganisms
Grow well in acidic food with low water activity
41ºF and 135ºF
Spoil Food
After four hours, pathogens will grow to a level high enough to cause illness.
Microorganisms that cause illness
pH of 0.0 to 6.9
Hair, dirt, bandages, metal staples, broken glass and naturally occurring objects like bones in fellers.
Down
6 conditions pathogens need to grow
Cannot grow in food but once eaten grows in a person's intestines
When microorganisms are transferred from one surface or food to another
Grow well in acidic food with low water activity
Some produce toxins in foods as they grow and die
Small living organisms that can be seen only through a microscope
Involves those practices performed by an individual to care for one's bodily health and well being, through cleanliness
Includes cleaners, sanitizers, polishes, machine lubricants, toxic metals
When nutrients are not available, certain bacteria can change into a different form
The amount of moisture available in food for pathogens to grow a„
Cannot grow in food. Must be in meat of another animal (host) like chickens, cows, fish and pigs.
Pathogens grow well in food held between the temperatures of 41º F and 135ºF
Pathogens need an energy source to grow - like carbohydrates and protein.
Foods contaminated with foodborne pathogens