43 Questions
Which lipid is found in the brain?
Sphingomyelin
What is the simplest glycolipid called?
Cerebroside
How is cholesterol structured?
4 linked hydrocarbon rings
What do bile salts originate from?
Cholesterol
Which lipid profile component is associated with high-density lipoprotein cholesterol?
Triglyceride
Where is cardiolipin primarily found?
Heart
Which type of fatty acids carry the maximum possible number of hydrogen atoms?
Saturated fatty acids
In a trans-fatty acid, where are the hydrogen atoms located in relation to the double bond?
On opposite sides of the double bond
Which type of fatty acids are necessary for vital functions and are derived from the diet?
Essential fatty acids
What is the main function of triglycerides in metabolism?
Energy source and transporter of dietary fat
Which type of lipids contain one or more fatty acids attached to a phosphate and an alcohol?
Phospholipids
What are phosphoglycerides derived from?
Glycerol
What is the defining feature of lipids?
Insolubility in water
How are fatty acids named systematically?
By substituting oic for the final e
Why does the water-insolubility of lipids contribute to complexity in their digestion and metabolism?
It poses challenges for combining them with water-soluble substances
What is the role of bimolecular sheets in gaseous exchange related to lipids?
Bimolecular sheets facilitate the transport of lipids
What type of solvents are lipids highly soluble in?
Non-polar solvents
Why are lipids essential to the overall energy economy of the cell?
They contribute to the cell's metabolism
Which type of fatty acids lack hydrogen atoms and have at least one double bond?
Unsaturated fatty acids
In a cis fatty acid, where are the hydrogen atoms located in relation to the double bonds?
On the same side of the double bonds
Which fatty acid is an example of a saturated fatty acid with no double bonds?
Stearic Acid
Phospholipids may be attached to glycerol or which other compound?
Sphingosine
Which type of fatty acids are produced by the body and are not derived from the diet?
Non-essential fatty acids
What is the main function of triglycerides in metabolism?
To transport dietary fat
Which lipid component is a major constituent of very low-density lipoprotein (VLDL)?
Triglycerides
What is the distinguishing feature of trans-fatty acids?
Their hydrogen atoms are on opposite sides of the double bond
What is the role of essential fatty acids within the body?
To perform vital functions and maintain health
Which lipid contains a sugar residue of glucose or galactose and is found in neural tissue?
Cerebroside
In which lipid is the orientation of the molecule parallel to the fatty acid chains of phospholipids, with the hydroxyl group interacting with nearby phospholipid head groups?
Cholesterol
Which lipid has a hydrocarbon tail linked to the steroid at one end and a hydroxyl group attached at the other end?
Cholesterol
What type of lipids differ from sphingomyelin based on the identity of the unit linked to the primary hydroxyl group of the sphingosine backbone?
Glycolipids
Which lipid originates from cholesterol and includes Taurine or Glycine along with the 4 linked hydrocarbon rings?
Bile Salt
Where is Sphingomyelin primarily found?
Brain
What is the composition of Sterol Lipids in addition to the 4 linked hydrocarbon rings?
Taurine or Glycine
"Glycolipids are sugar-containing lipids derived from sphingosine." What differentiates glycolipids from sphingomyelin?
"Glycolipids have a different linking unit in the sphingosine backbone."
What is the systematic name for a C16 fatty acid with one double bond?
Hexadecenoic
Why do lipids exhibit insolubility in water, contributing to complexity in their digestion and metabolism?
The non-polar nature of lipids prevents interaction with water molecules
Which of the following is NOT a function of lipids in the energy economy of the cell?
Facilitation of protein synthesis
In an unsaturated fatty acid, what does the term 'unsaturated' refer to?
The presence of double bonds in the hydrocarbon chain
Which type of lipids are highly soluble in non-polar solvents like Chloroform and ether?
Steroids
What is the main feature that defines lipids and sets them apart from other organic compounds?
Insolubility in water but solubility in non-polar solvents
How are the carbon atoms numbered in fatty acids starting from the Carboxyl terminus?
Starting at the first carbon adjacent to the carboxyl group
What is the primary role of non-polar solvents like Chloroform and ether in lipid solubility?
Disrupting intermolecular forces between lipid molecules
Test your knowledge on different types of lipids such as cardiolipin, sphingomyelin, and glycolipids. Learn about their composition and where they are commonly found in the body.
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