Which component of lecithin contributes to its amphipathic nature, allowing it to form bilayers in cell membranes?
Glycerol backbone only
Fatty acid chains only
Phosphate group only
Phosphate group and fatty acid chains
Related Questions
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
Paraffin wax is
a complex carbohydrate.
a mixture of solid hydrocarbons.
a type of lipid found in plants.
a synthetic polymer.
Phospholipids are
Conjugated lipids
Derived lipids
Simple lipids
None of these
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.
Hydrolysis of lipid yields?
Fats
Fatty acids and glycerol
Mannose and glycerol
Maltose and fatty acids
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
Phospholipids are
Amphipathic
Amphibolic
Hydrophobic
None of these
A typical fat molecule is composed of:
One glycerol and three fatty acids
Three glycerols and one fatty acid
One glycerol and one fatty acid
Three glycerols and three fatty acids
Which of the following biological roles is primarily associated with lecithin, a low molecular weight organic compound found in cell membranes?
Energy storage
Maintaining cell membrane structure
Catalyzing enzymatic reactions
Genetic information storage
