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1

Which of the following is necessary and sufficient for life?
A)complexity
B)heredity
C)growth
D)all of these
2

Which of the following most accurately describes the origins of life on earth?
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?
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?
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
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
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
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?
A)mitochondrion
B)chloroplast
C)endoplasmic reticulum
D)all of these structures
9

All organisms fall into one of ________ domains that include _____ kingdoms.
A)six/three
B)six/six
C)three/three
D)three/six
10

Which of the following statements is false.
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.







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