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.