18 Questions
Which of the following is not a use of terpenoids?
Building materials
Which type of terpenoid is composed of isoprene and non-isoprenoid units?
Meroterpenoids
Which type of terpenoid is synthesized by the union of two C10 units?
Diterpenoids
Which of the following is NOT a natural product class of terpenoids?
Quinones
Which type of terpenoid is composed of six C5 units?
Triterpenoids
Which type of terpenoid is used as a plant growth regulator?
Gibberellins
What is the composition of sesquiterpenoids?
Three Isoprene units, C15H24
Which plant hormone is a sesquiterpenoid?
Abscisic acid (ABA)
Which class of sesquiterpenoid lactones has a five-membered ring fused to a seven-membered ring?
Guaianolides
Which of the following plants is a source of artemisinin?
Artemisia annua
What type of terpenoid is artemisinin?
Sesquiterpenoid
Which of the following is a common biological nucleophile that reacts with sesquiterpenoid lactones?
Thiol and amino groups of enzymes
Which class of terpenoids is composed of six isoprene units?
Triterpenoids
What is one of the most promising antineoplastic drugs derived from a plant source?
Taxus brevifolia
Which of the following is a triterpenoid with antileukemic properties?
Quassinoids
What is the most common carotenoid in higher plants?
Beta-carotene
Which class of terpenoids is responsible for the yellow, orange, red, and purple colors seen in living organisms?
Tetraterpenoids
Which of the following is a terpenoid used to treat severe recalcitrant cystic acne?
ISOTRETINOIN
Test your knowledge on natural product classes like carotenoids, meroterpenoids, ergot alkaloids, and more. Learn about the biosynthetic origins and composition of these compounds.
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