18 Questions
Which type of lipids contains a glycerol backbone and 3 fatty acids?
Triglycerides
What is the main function of lipids related to body heat?
Insulation
Which type of fatty acids contain at least one double bond in the hydrocarbon tail?
Unsaturated fatty acids
What is the calorie content per gram of fats and oils?
9 calories
What is the typical energy contribution from fat in the American diet?
33%
Which fatty acid category contains a hydrocarbon tail with single bonds only?
Saturated fatty acids
How many calories per gram do carbohydrates contain?
4 calories
What do lipids contribute to the texture, taste, flavor, and aroma of foods?
High fat content
What is the main function of phospholipids in the body?
Cell membrane formation
What is the position of the first double bond in an omega-6 (ω-6) fatty acid?
Between the 6th and 7th carbon
Why are omega-3 and omega-6 fatty acids considered essential?
Because humans cannot produce them and must obtain them from the diet
Which type of fatty acid has a higher melting point?
Saturated
What is the function of phospholipids in cell membranes?
To regulate the passage of substances into and out of the cell
What is the major constituent of cell membranes and used to synthesize the neurotransmitter acetylcholine?
Lecithin
Where is cholesterol found in the body?
In cell membranes and myelin
Which type of fatty acid is found in coconut oil?
Saturated
What is the starting molecule for the synthesis of vitamin D, cortisol, estrogen, and testosterone?
Cholesterol
Which type of fatty acid is commonly found in walnuts and flax seeds?
Omega-3 polyunsaturated
Test your knowledge of lipids with this quiz! Learn about the different types of lipids, their functions, and their role in food texture and flavor. Explore the importance of lipids in energy storage, cell membranes, and more.
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