17 Questions
What is the most common type of lipid present in our body?
Triglycerides
Which type of bonds do saturated fats have?
Single bonds
What is the chief difference between fixed oils and fats?
Type of alcohol found in them
Which lipid compound has a phosphate group and a polar group?
Phospholipids
What is the general term for the esters of long-chain fatty acids and alcohols or closely related derivatives?
Fixed oils
Which lipid compound is known for its role in increasing the risk of heart disease?
Saturated fats
What type of oil undergoes oxidation when exposed to air and forms a tough and hard film?
Drying oil
Which type of fixed oil does not undergo oxidation or form a tough and hard film when exposed to air?
Non-drying oil
What type of fixed oil undergoes a little bit of oxidation when exposed to air and forms a tough and thin film?
Semi-drying oil
How are animal fats separated from other tissues for extraction?
By rendering with steam
What does the term 'iodine value' (I.V.) refer to in the context of fixed oils?
of grams of iodine absorbed by 100g of the sample
What is the main component of soap that helps to emulsify and wash away oily dirt?
Fatty acids
In the structure of fats, what makes the whole molecule hydrophobic?
The fatty acid tails
Which type of molecule has a long hydrocarbon chain that is hydrophobic and a carboxyl group head that is hydrophilic?
Phospholipids
What type of bonds link the 3 fatty acids to glycerol in triglycerides?
Ester linkages between OH & COOH
Which of the following is a property of fixed oils?
Non-irritant and odorless
What do fixed oils produce on paper when applied?
Greasy marks
Learn about the composition of waxes, fats, and phospholipids, including the role of alcohols, fatty acids, and glycerol. Understand the structure of triglycerides and the hydrophobic and hydrophilic properties of phospholipids.
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