18 Questions
What is the function of HDL (high-density lipoprotein) in the body?
Scavenge cholesterol from membranes
Which lipoprotein is responsible for transporting cholesterol from the liver to other tissues?
LDL
Which type of cholesterol is commonly known as the 'bad' cholesterol?
LDL
What is another name for a lipid panel test used to monitor cardiovascular disease risk?
Lipid profile test
Which lipoprotein is considered 'good' cholesterol?
HDL
Which type of particles bind to cell receptors and allow cells to use cholesterol?
LDL
Which type of fatty acids need to be included in the diet because they cannot be synthesized?
Omega-3 and Omega-6 Fatty Acids
What is the common name for the compound lipid 20:5Δ5,8,11,14,17?
Eicosapentaenoic Acid (EPA)
What causes the taste and smell associated with rancidity in fats or oils?
Oxidative rancidity
Which fatty acids are easily oxidized by O2 through a radical chain reaction?
Polyunsaturated Fats and Oils
Which process is a major cause of quality deterioration in foods and cosmetic products?
Oxidative Rancidity
What is the basic difference in structure between phospholipids and triacylglycerides?
Phospholipids have C-3 of the glycerol backbone esterified to phosphoric acid.
What do omega-3 and omega-6 fatty acids transform into in the body?
Hormones called Eicosanoids
How do lecithins contribute to foods like mayonnaise?
Prevent aqueous and fat components from separating.
Which compound is considered the precursor of all other steroids in animals?
Cholesterol
Why do saturated fatty acids have higher melting points compared to unsaturated fatty acids?
Increased van der Waals interactions due to longer hydrocarbon chains.
What is the role of cholesterol in cell membranes?
Making cell membranes more rigid.
How does the presence of double bonds affect the melting point of unsaturated fatty acids?
It significantly lowers the melting point.
Test your knowledge on blood clotting and lipoproteins! Explore topics like aspirin's effect on blood clotting, cholesterol transport in the bloodstream, and the classification of particles based on density.
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