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1. 1) The element present in all organic molecules is C) carbon
________.
A) hydrogen
B) oxygen
C) carbon
D) nitrogen
2. 2) The complexity and variety of organic molecules is A) the chemical versatility
due to ________. A) the chemical versatility of carbon of carbon atoms
atoms
B) the variety of rare elements in organic molecules
C) the diverse bonding patterns of nitrogen
D) their interaction with water
3. 3) The experimental approach taken in current biolog- D) living organisms can be
ical investigations presumes that ________. understood in terms of the
A) simple organic compounds can be synthesized in same physical and chemi-
the laboratory from inorganic precursors, but complex cal laws that can be used
organic compounds like carbohydrates and proteins to explain all natural phe-
can be synthesized only by living organisms nomena
B) a life force ultimately controls the activities of living
organisms, and this life force cannot be studied by
physical or chemical methods
C) living organisms are composed of the same ele-
ments present in nonliving things, plus a few special
trace elements found only in living organisms or their
products
D) living organisms can be understood in terms of the
same physical and chemical laws that can be used to
explain all natural phenomena
4. insoulable
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incapable of being dis-
solved
5. 4) Differences among organisms are caused by differ- B) types and relative
ences in the ________. amounts of organic mole-
A) elemental composition from organism to organism cules synthesized by each
B) types and relative amounts of organic molecules organism
synthesized by each organism
C) sizes of the organic molecules in each organism
D) types of inorganic compounds present in each or-
ganism
6. nonpolar covalent equal sharing of electrons
7. 5) Stanley Miller's 1953 experiments supported the B) organic molecules can
hypothesis that ________. be synthesized abiotically
A) life on Earth arose from simple inorganic molecules under conditions that may
B) organic molecules can be synthesized abiotically have existed on early Earth
under conditions that may have existed on early Earth
C) life on Earth arose from simple organic molecules,
with energy from lightning and volcanoes
D) the conditions on early Earth were conducive to the
origin of life
8. hydrocarbon chain
9. 6) Miller's classic experiment demonstrated that a dis- B) oxygen
charge of sparks through a mixture of gases could
result in the formation of a large variety of organic
compounds. Miller did not use ________ as one of the
gases in his experiment.