What are the two isoprenoid units involved in the initial stages of cholesterol biosynthesis?
Cholesterol Biosynthesis Stage 3 Generating Squalene & Lanosterol

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Science, Chemistry
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Isopentenyl pyrophosphate and dimethyl allyl pyrophosphate
Geranyl pyrophosphate and farnesyl pyrophosphate
Cholesterol and vitamin D
Squalene and lanosterol
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme catalyzes the condensation of isoprenoid units to form geranyl pyrophosphate?
Cyclase
Monooxygenase
Prenyl transferase
Squalene synthase
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of farnesyl pyrophosphate in cellular processes?
It is used in protein farnesylation and synthesis of squalene
It directly converts to cholesterol
It is a precursor to vitamin D
It is involved in DNA replication
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme is responsible for the unique condensation of farnesyl pyrophosphate to form squalene?
Monooxygenase
Squalene synthase
Cyclase
Prenyl transferase
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the structure of squalene relate to cholesterol?
Squalene is a precursor to vitamin D
Squalene contains heteroatoms like cholesterol
Squalene has a similar folded structure to cholesterol
Squalene is a protein
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of squalene monooxygenase in cholesterol synthesis?
It catalyzes protein farnesylation
It synthesizes farnesyl pyrophosphate
It epoxidizes squalene
It converts squalene to lanosterol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which molecule marks the beginning of phase four in cholesterol synthesis?
Lanosterol
Farnesyl pyrophosphate
Geranyl pyrophosphate
Vitamin D
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