Question

Study the following statements related to lipids and identify the correct statements:
I. Lecithin is a glycolipid
II. Saturated fatty acids possess one or more C=C bond
III. Fatty acids esterified with glycerol forms monoglycerides
IV. Gingely oil has low melting point, hence remains as oil in winter
V. Lipids are generally water insoluble

• A. I, IV & V
• B. I, II & III
• C. III, IV & V
• D. I, II & IV

Hint:

Remember that lecithin is a type of phospholipid with a sugar component, classifying it as a glycolipid. Saturated fatty acids do not contain double bonds, which distinguishes them from unsaturated fatty acids. Oils like gingely oil remain liquid due to low melting points. Overall, lipids are hydrophobic and largely insoluble in water, which is crucial for understanding their biological roles.

Answer 1

The Correct Option is A

Lecithin is a phospholipid that contains a carbohydrate group, which qualifies it as a glycolipid. Saturated fatty acids, contrary to statement II, do not have double bonds; only unsaturated fatty acids contain C=C bonds. Fatty acids esterified with glycerol can form mono-, di-, or triglycerides, so statement III is partially correct but incomplete. Gingely oil has a low melting point and thus remains liquid at room temperature, making statement IV correct. Lipids are generally hydrophobic and insoluble in water, so statement V is also correct. Therefore, the statements I, IV, and V are correct.