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Biomolecules question

2021 · Q78
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Biomolecules question

2021 · Q78

NEETBiologyBiomoleculesMCQ+4 / −1
Following are the statements with reference to 'lipids'.

(1) Lipids having only single bonds are called unsaturated fatty acids

(2) Lecithin is a phospholipid.

(3) Trihydroxy propane is glycerol

(4) Palmitic acid has 20 carbon atoms including carboxyl carbon.

(5) Arachidonic acid has 16 carbon atoms.

Choose the correct answer from the options given below.
  1. A
    (2) and (5) only
  2. B
    (1) and (2) only
  3. C
    (3) and (4) only
  4. D
    (2) and (3) only
View written solutionFree

Correct answer: D

∙\bullet∙ The correct option is (d) because lipids having only single bonds are called saturated fatty acids and lipids having one or more C = C double bonds are called unsaturated fatty acids.

∙\bullet∙ Palmitic acid has 16 carbon atoms including carboxyl carbon.

∙\bullet∙ Arachidonic acid has 20 carbon atoms including the carboxyl carbon.

∙\bullet∙ Lecithin is a phospholipid found in cell membrane.

∙\bullet∙ Glycerol has 3 carbons, each bearing a hydroxyl (−-−OH) group.

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