All GRE Subject Test: Chemistry Resources
Example Questions
Example Question #103 : Macromolecules
Which of the following molecule is a type of terpene?
Possible Answers:
because it is derived from a pentene
because it is derived from a pentene
because it is derived from an isoprene
because it is derived from an isoprene
Correct answer:
because it is derived from an isoprene
Explanation:
Terpenes are special classes of lipids that are derived from isoprene units. An isoprene unit’s molecular formula is ; therefore, terpenes must contain a molecular formula that is derived from a
empirical formula.
The molecular formula consists of seven isoprene units (
=
); therefore,
is a type of terpene.
Pentene is an alkene with the molecular formula .
(
) is derived from pentene units; however, terpenes do not have pentene units.
Gregory
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Pennsylvania State University-Main Campus, Bachelor of Science, Chemical Engineering. Carnegie Mellon University, Doctor of P...
Yongmao
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Nankai University, Bachelor of Science, Chemistry. Washington University in St Louis, Doctor of Philosophy, Organic Chemistry.
All GRE Subject Test: Chemistry Resources
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