View the animation below, then complete the quiz to test your knowledge of the concept.

1	How common are food spoilage microorganisms?
	A)	they are extremely rare
	B)	almost none of our foods contain them
	C)	a few of our foods contain them
	D)	almost all of our foods contain them
2	The most common organisms causing food spoilage are bacteria,
	A)	yeasts and insects.
	B)	yeasts and molds.
	C)	molds and insects.
	D)	insects and parasites.
3	This animation shows that food spoilage microorganisms can be classified by their
	A)	growth temperature preferences.
	B)	growth time preferences.
	C)	growth moisture preferences.
	D)	food source.
4	By keeping food cold the growth of microorganisms is
	A)	increased.
	B)	not changed.
	C)	minimized.
	D)	stopped and they are killed.
5	In this animation, on which day does the room temperature orange begin to show spoilage?
	A)	day 0
	B)	day 4
	C)	day 8
	D)	day 12