Podcast
Questions and Answers
What is the chemical unit commonly called 'triglycerides' composed of?
What is the chemical unit commonly called 'triglycerides' composed of?
- One unit of glycerol and three units of fatty acids (correct)
- Two units of glycerol and two units of fatty acids
- Four units of glycerol and one unit of fatty acid
- Three units of glycerol and one unit of fatty acid
In which solvents are triglycerides soluble?
In which solvents are triglycerides soluble?
- Hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid
- Methanol, chloroform, ammonia, isopropyl alcohol
- Petroleum ether, benzene, hexane, carbon tetra chloride, ethyl alcohol (correct)
- Water, acetone, vinegar, hydrogen peroxide
How are triglycerides classified based on their state at room temperature?
How are triglycerides classified based on their state at room temperature?
- Liquid as fats, and solid or semi solid as oils
- Solid or semi solid as fats, and liquid as oils (correct)
- Solid as oils, and liquid or semi solid as fats
- Liquid or semi solid as fats, and solid as oils
Where do triglycerides that are classified as oils originate chiefly from?
Where do triglycerides that are classified as oils originate chiefly from?
What do fats and oils supply more than twice the energy as compared to?
What do fats and oils supply more than twice the energy as compared to?
Flashcards
Triglyceride composition
Triglyceride composition
One glycerol and three fatty acids
Triglyceride solvents
Triglyceride solvents
Soluble in petroleum ether, benzene, hexane, carbon tetrachloride, and ethyl alcohol
Triglyceride states
Triglyceride states
Fats are solid/semi-solid, while oils are liquid at room temperature.
Oil source
Oil source
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Triglyceride energy
Triglyceride energy
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Study Notes
Composition of Triglycerides
- Composed of three fatty acid molecules esterified to a glycerol backbone.
- Fatty acids can be saturated or unsaturated, influencing physical properties.
Solubility of Triglycerides
- Soluble in organic solvents such as chloroform, ether, and benzene.
- Insoluble in water due to their nonpolar nature.
Classification of Triglycerides
- Classified as solid fats or liquid oils based on their state at room temperature.
- Solid fats contain higher levels of saturated fatty acids, while liquid oils have more unsaturated fatty acids.
Origin of Oils
- Oils primarily originate from plant sources, such as seeds, nuts, and fruits.
- Common examples include olive oil, sunflower oil, and peanut oil.
Energy Density of Fats and Oils
- Fats and oils supply more than twice the energy compared to carbohydrates and proteins.
- They provide approximately 9 calories per gram, while carbohydrates and proteins provide about 4 calories per gram.
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Description
Test your knowledge about the chemical composition and characteristics of fats and oils, including their solubility properties. Explore the major food groups and their classification as fats or oils.
