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1	The artificial muscles created by the scientists are made up of:
	A)	plastic
	B)	metal
	C)	rubber
	D)	human muscle cells
2	The artificial muscles in the article:
	A)	are 10,000 times stronger than human muscle
	B)	are fueled by ATP energy
	C)	run on biodiesel fuel
	D)	none of the above
3	The contraction of the artificial muscle:
	A)	depends upon a catalyst coating the muscle components
	B)	is powered by the addition of alcohol
	C)	occurs due to heating of the metallic muscle components
	D)	a and b
	E)	all of the above
4	In the article, the scientists suggest that the artificial muscles could one day:
	A)	be powered by biodiesel fuel
	B)	be used to create enhanced prosthetic devices
	C)	power artificial hearts
	D)	all of the above