Questions and Answers
What is the general characteristic of lipids in terms of solubility?
What happens when you mix oil and vinegar in a salad dressing?
What is the primary source of energy from lipids?
What is a common health concern associated with lipids?
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What is the percentage of water in vinegar?
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What is the result of shaking a mixture of oil and vinegar?
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What is the term for the major kind of lipid that includes fatty acids and triglycerides?
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What is the common phrase associated with the mixing of oil and water?
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What is the primary function of subcutaneous fat?
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What is the role of dietary lipids in food?
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Why is it impossible for a person to be 'fat free'?
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What is the benefit of having excess body fat for older adults like Rose?
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What would happen to the sensory quality of the baked cake if you replace the water with whole milk?
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What is the primary function of fat in the body?
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Why are many Americans confused about the roles of fat and cholesterol in health?
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What is the role of lipids in the plasma membrane?
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Study Notes
Introducing Lipids
- Lipids are a class of macronutrients that includes fatty acids, triglycerides, phospholipids, and cholesterol.
- Lipids are insoluble in water but soluble in organic solvents like alcohol and acetone.
Properties of Lipids
- When mixed with water, lipids do not dissolve to form a solution due to their insolubility.
- Lipids are less dense than water, causing them to rise to the top of water when mixed.
Functions of Lipids
- Provide and store energy
- Maintain cell membranes
- Produce certain hormones
- Insulate the body against cold temperatures
- Cushion the body against bumps and blows
- Contribute to body contours
- Absorb and store fat-soluble vitamins and phytochemicals
Importance of Lipids in Foods
- Enhance intestinal absorption of fat-soluble vitamins and phytochemicals
- Contribute to the rich flavor, smooth texture, and appetizing aroma of foods
- Make foods taste more appetizing
Confusion about Fat and Cholesterol
- Consuming high amounts of certain lipids may increase the risk of cardiovascular disease (CVD)
- Some dietary fat is essential to good health
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Description
Test your knowledge of lipids, including their properties, functions, and characteristics. Learn about macronutrients, insolubility, and more!
