Which statement regarding the biosynthesis of cholesterol is INCORRECT?
HMG-CoA reductase is the rate-limiting enzyme in cholesterol biosynthesis.
The process occurs primarily in the liver.
NADPH provides the reducing equivalents for the biosynthesis of cholesterol.
Oxygen is directly involved in the condensation of isoprene units to form squalene.
Related Questions
Why does gingely oil remain liquid at lower temperatures, unlike some other oils?
It is rich in saturated fatty acids.
It has a high melting point.
It is composed primarily of phospholipids.
It is rich in unsaturated fatty acids with lower melting points.
A triglyceride is formed from glycerol and:
One fatty acid
Two fatty acids
Three fatty acids
Four fatty acids
Which of the following is NOT a function of cardiolipin?
Stabilizing the structure of respiratory chain complexes
Facilitating mitochondrial cristae formation
Major component of cell membrane fluidity
Apoptosis regulation
Which lipid acts as a precursor for both prostaglandins and leukotrienes?
Linoleic acid
Palmitic acid
Arachidonic acid
Oleic acid
A lipid molecule composed of glycerol, two fatty acids, and a phosphate group is classified as a:
Triglyceride
Steroid
Phospholipid
Wax
Which of these is a steroid?
Glycerol
Palmitic acid
Cholesterol
Lecithin
Which of the following substances are NOT examples of polymers?
Proteins
Nucleic acids
Polysaccharides
Lipids
Which lipid is a major component of cell membranes?
Triglycerides
Cholesterol
Waxes
Phospholipids
Tay-Sachs disease is caused by a deficiency in the enzyme hexosaminidase A. This leads to the accumulation of which lipid in the brain?
Cerebroside
Sphingomyelin
GM2 ganglioside
Phosphatidylcholine
A lipid molecule formed by the esterification of glycerol with three fatty acids is known as a:
Monoglyceride
Diglyceride
Triglyceride
Phospholipid
