Choose the best answer

1			Which of the following is necessary and sufficient for life? Need a Hint?
			A)	complexity
			B)	heredity
			C)	growth
			D)	all of these
2			Which of the following most accurately describes the origins of life on earth? Need a Hint?
			A)	Special creation: Life-forms were put on earth by supernatural or divine forces.
			B)	Extraterrestrial origin: The earth may have been infected by life from another planet.
			C)	Spontaneous origin: Life evolved from inanimate matter to increasing levels of complexity.
			D)	None of these are accurate.
3			Which of the following proposals assumes that the earth had a reducing atmosphere low in oxygen? Need a Hint?
			A)	Life evolved deep in the earth's crust.
			B)	Life evolved under frozen oceans.
			C)	Life evolved at the ocean's edge.
			D)	Life evolved at deep-sea vents.
4			Scientists have created synthetic nucleotide-like molecules in the laboratory that are able to replicate. This seems to support which hypothesis of chemical evolution? Need a Hint?
			A)	an RNA-first hypothesis
			B)	a protein-first hypothesis
			C)	a peptide-nucleic acid first hypothesis
			D)	All of the hypotheses are supported by these results.
5			A key link needed between bubbles and cells is Need a Hint?
			A)	that they needed a hereditary molecule.
			B)	that they needed to grow and bud off new bubbles.
			C)	that they needed to incorporate enzymes.
			D)	that they needed to form spontaneously.
6			Prokaryotes were the only life-form on the earth Need a Hint?
			A)	for about 1.5 billion years.
			B)	for about 1 billion years.
			C)	for about 2.5 billion years.
			D)	for more than 2.5 billion years.
7			The first organisms may have been a type of archaebacteria similar to present day organisms called Need a Hint?
			A)	extreme halophiles.
			B)	prokaryotes.
			C)	extreme thermophiles.
			D)	eubacteria.
8			The infolding of outer membrane seen in prokaryotes is believed to have given rise to which of the following? Need a Hint?
			A)	mitochondrion
			B)	chloroplast
			C)	endoplasmic reticulum
			D)	all of these structures
9			All organisms fall into one of ________ domains that include _____ kingdoms. Need a Hint?
			A)	six/three
			B)	six/six
			C)	three/three
			D)	three/six
10			Which of the following statements is false. Need a Hint?
			A)	Life may have evolved on Mars.
			B)	In order for life to evolve anywhere, carbon is required.
			C)	A large ocean exists under the icy surface of Europa.
			D)	It is possible that life may have evolved on some other planet.