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

1	The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and
	A)	food texture.
	B)	time.
	C)	temperature.
	D)	cleaning agents.
2	With ideal environmental factors, the reproduction rate of bacteria is
	A)	extremely slow.
	B)	somewhat slow.
	C)	somewhat rapid.
	D)	extremely rapid.
3	What is the most important environmental factor influencing bacterial growth?
	A)	food texture
	B)	time
	C)	temperature
	D)	cleaning agents
4	Above 100° C (212°F) most bacteria
	A)	are destroyed.
	B)	stop growing, but are not dead.
	C)	are not affected by the heat.
	D)	grow rapidly.
5	At freezing temperatures, most bacteria
	A)	are destroyed.
	B)	stop growing, but are not dead.
	C)	are not affected by the cold.
	D)	grow rapidly.