22 Questions
What is the primary function of lipids in the human body?
Energy storage and source
What is the characteristic of lipids that makes them soluble in nonpolar solvents?
Nonpolar molecules
Which of the following is a type of lipid that is not a glyceride?
Steroid
What is the role of lipid-soluble vitamins in the human body?
Regulation of several critical biological processes
What is the energy yield from the breakdown of 1 gram of fat?
9 kcal
Which of the following is a function of lipids in the body?
All of the above
What is the primary application of FTIR spectroscopy in lipid research?
Investigation of lipid conformation and bond structure
Which technique is commonly used in lipidomics to identify and quantify lipid species?
Mass spectrometry
What is the primary goal of isotope tracing in lipid research?
To trace the biosynthesis and metabolism of lipids
What is the main purpose of solid-phase extraction in lipid research?
To extract, purify, and concentrate lipids from complex mixtures
Which technique provides information about the three-dimensional structure of lipid molecules?
X-ray crystallography
What is the main application of functional assays in lipid research?
To evaluate the impact of lipids on biological processes
What is the simplest and most common phosphoglyceride?
Phosphatidic acid
What is the function of pulmonary surfactant in the lungs?
To reduce surface tension in the alveoli
What is the characteristic of sphingolipids?
Amphipathic with a polar head and nonpolar tails
What is the function of bile salts?
To aid in the emulsification and digestion of lipids
What is the characteristic of cholesterol?
Amphipathic and readily soluble in hydrophobic region
What is the function of lecithin?
To emulsify triglycerides in water
What is the characteristic of glycosphingolipids?
Characterized by a single monosaccharide head group
What is the role of sphingomyelins?
Structural components of nerve cell membranes
What is the characteristic of steroids?
Built from one or more five-carbon units called isoprene
What is the function of chylomicrons?
To transport lipids in the form of triacylglycerol, fatty acids, and cholesterol
Learn about the structure and properties of phosphoglycerides and phospholipids, including phosphatidic acid and lecithin, and their role in cell membranes.
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