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CAMPBELL BIOLOGY PRACTICE TEST QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY PRACTICE TEST QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY PRACTICE TESTQUESTIONS AND ANSWERS
The first organic molecule to be synthesized from inorganic substances was _____.
1. urea
2. acetic acid
3. ammonium cyanate
4. insulin
5. DNA - Answer-1
Stanley Miller's experiments were significant because he demonstrated that _____.
1. The behavior of any molecule containing a carbon atom was fundamentally the same
2. under certain circumstances the theory of vitalism was valid
3. a large variety of organic compounds could be spontaneously synthesized from
components in Earth's primitive atmosphere
4. lightning discharges could produce the molecules previously presumed to have
originated in volcanic outgassings
5. urea could be synthesized from entirely naturally occurring salts - Answer-3
Which is an organic molecule?
1. Ne
2. O2
3. CH4
4. NaCl
5. H2O - Answer-3
Which element is most particularly associated with organic chemistry?
, 1. carbon
2. sulfur
3. nitrogen
4. potassium
5. oxygen - Answer-1
What is the three-dimensional shape created by hybrid orbitals that are formed when a
carbon atom is covalently bonded with four other atoms?
1. A flat sheet with carbon in the center
2. A triangle with carbon in the center
3. A cube with carbon in the center
4. A tetrahedron with carbon in the center
5. All of the above are possible - Answer-4
A molecule constructed from ___ must contain at least one carbon-carbon double bond.
1. 6 hydrogen, 2 carbon
2. 6 hydrogen, 3 carbon
3. 6 hydrogen, 2 carbon, 1 oxygen
4. 8 hydrogen, 3 carbon, 3 oxygen
5. 14 hydrogen, 12 carbon - Answer-2
Carbon atoms are the most versatile building blocks of the molecules used by living
organisms because _____.
1. Carbon is the central atom of carbon dioxide, a necessary molecule for
photosynthesis
2. Carbon is the central atom in urea, a molecule used by many living organisms to
transport wastes from the body
3. Each carbon atom acts as an intersection point from which a molecule can branch off
in up to four directions
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