Which lipid acts as a precursor for both prostaglandins and leukotrienes?
Linoleic acid
Palmitic acid
Arachidonic acid
Oleic acid
Related Questions
Which lipid acts as a thermal insulator in animals?
Phospholipids
Waxes
Subcutaneous fat
Cholesterol
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.
Which of the following best describes the composition of a triglyceride?
One glucose molecule and three fatty acids.
One glycerol molecule and three fatty acids.
Three glycerol molecules and one fatty acid.
One glucose molecule and three amino acids.
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.
During the formation of a fat molecule, how many water molecules are released?
1
2
3
4
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 fatty acid has a carboxyl group attached to R group. The R group could be a
Methyl
Ethyl
Higher number of groups (1 to 19 carbons)
All of the above
Which type of bond is characteristic of saturated fatty acids?
C=C
CC
C-O
C-C
Choose a primary metabolite with phosphorylated organic compound in its structure.
Palmitic acid
Ribose
Cholesterol
Lecithin
All of the following are examples of polymers EXCEPT:
Enzymes
DNA
Starch
Triglycerides
