BIOL 439 Quiz 1 Questions | 2026/2027 | Answers Correct | With Complete Solutions

BIOL 439 Quiz 1 Questions | 2026/2027 | Answers Correct |
With Complete Solutions

.Which of the following are functional applications of Camphor?
(Select all that apply.)
a) Used to treat hemorrhoids
b) Used to treat low blood pressure
c) Used to relieve coughs
d) Used to treat warts and cold sores Correct Answers a) Used
to treat hemorrhoids
b) Used to treat low blood pressure
c) Used to relieve coughs

"Isoprene rule" states that all terpenes are multiples of C4
isoprene.
a) True
b) False Correct Answers b) False

1. Fill in the blank: A mixture of raw material extracted from
plants is processed. After heating, only one solid residue
remains. Analysis shows the residue to be _____
a) Pentacyclic
b) Triterpenoid
c) Tetracyclic
d) Diterpenoid Correct Answers c) Tetracyclic

1. Fill in the blanks: Douglas fir beetles are ___ by a-pinene and
____by b-pinene. ____ trees have higher proportions of a-
pinene.
a) repelled; attracted; "Weaker"
b) repelled; attracted; "Stronger"

,c) attracted; repelled; "Stronger"
d) attracted; repelled; "Weaker Correct Answers d) attracted;
repelled; "Weaker

1. Fill in the blanks: Enantiomers are ___that are ___ and _____

a) optical isomers; non-superimposable mirror images; are
optically active
b) optical isomers; non-mirror images; have the same physical
properties
c) geometric isomers; non-superimposable mirror images; have
different physical properties
d) optical isomers; non-superimposable mirror images; have
different physical properties Correct Answers a) optical
isomers; non-superimposable mirror images; are optically active

1. Select the compound that you would apply to a plant that will
not flower nor bud
a) Phytol
b) Stigmasterol
c) Tigaliane
d) Giberellin Correct Answers d) Giberellin

1. Select the correct monocyclic monoterpenoid that gives rise to
a-pinene and B-pinene.
a) Citral
b) Limonene
c) Thymol
d) Cineole Correct Answers b) Limonene

1. Select the correct secondary metabolite.

,a) Steroids
b) Terpenoids
c) Nucleosides
d) Amino acids Correct Answers b) Terpenoids

1. Which of the following are functional applications for
Pinenes? (Select all that apply.)
a) Used to treat low blood pressure
b) Used to treat warts and cold sores
c) Used to reduce anxiety
d) Used to reduce inflammation Correct Answers c) Used to
reduce anxiety
d) Used to reduce inflammation

1. Which of the following is an example of how secondary
metabolites are economically exploited? (Select all that apply.)
a) Food and drink industry
b) Rubber
c) Fragrance industry
d) Pharmaceuticals Correct Answers a) Food and drink
industry
b) Rubber
c) Fragrance industry
d) Pharmaceuticals

1Select the incorrect statement.
a) An isomerase is responsible for the conversion between GPP
and NPP
b) Monocyclic monoterpenoids are derived from NPP
c) Meta-menthane (m-menthane) skeleton is common to
monocyclics

, d) Acyclic monoterpenoids are derived from IPP and DMAPP
Correct Answers c) Meta-menthane (m-menthane) skeleton is
common to monocyclics

A compound with 1 isoprene unit is a monoterpenoid.
a) True
b) False Correct Answers b) False

A head-to-head reaction of two trans diterpenyl diphosphates
will result in C40 (e.g., sterols).
a) True
b) False Correct Answers b) False

A plant will not make as many nutrients as a form of defense.
a) True
b) False Correct Answers a) True

Abscisic acid biosynthesis involves an epoxide intermediate.
a) True
b) False Correct Answers a) True

An organism or pathogen can internalize a terpenoid and begin
to use it as their own defense mechanism.
a) True
b) False Correct Answers a) True

Camphene looks like a bicyclic monoterpenoid, but it is actually
an irregular monoterpenoid, because it is derived from the
lavandulol skeleton, which comes from the linkage of two IPPs.

a) True