Which of these is a steroid?
Glycerol
Palmitic acid
Cholesterol
Lecithin
Related Questions
Steroid hormones are similar in structure to?
Tryosine
Cholestrol
Co-enzyme A
Glycerol
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
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.
Lecithin is an example of a(n):
Triacylglycerol
Steroid
Phospholipid
Polysaccharide
Lecithin, a relatively small organic molecule found in various living tissues, belongs to which class of biomolecules?
Carbohydrate
Protein
Nucleic Acid
Lipid
Lipids are generally
I. water soluble
II. water insoluble
III. soluble in non-polar organic solvents
IV. not soluble in non-polar organic solvents
Choose the correct options
Only I
II and III
II and IV
Only IV
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 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.
Which lipid acts as a precursor for both prostaglandins and leukotrienes?
Linoleic acid
Palmitic acid
Arachidonic acid
Oleic acid
Which of the following is NOT a lipid?
Cholesterol
Triglyceride
Glycogen
Phospholipid
