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NEET2022Zoology-Lipids

NEET 2022 Zoology Lipids Multiple Correct Question

Type: Multiple Correct-fact-Medium-Class 11

Read the following statements on lipids and find out correct set of statements:

i. Lecithin found in the plasma membrane is a glycolipid

ii. Saturated fatty acids possess one or more C = C bonds

iii. Gingely oil has lower melting point, hence remains as oil in winter

iv. Lipids are generally insoluble in water but soluble in some organic solvents

v. When fatty acid is esterified with glycerol, monoglycerides are formed

A

iii, iv and v only

B

i, ii and iv only

C

i, ii and iii only

D

ii, iv and v only

Correct Answer

Option A

Detailed Explanation

Chapter: Biomolecules

Class: 11 | Topic: Lipids | Difficulty: šŸŸ” Medium

āœ… Ans: A ā€” iii, iv and v only

  • i āŒ Lecithin is a phospholipid, not glycolipid.
  • ii āŒ Saturated fatty acids have no C=CC=C double bond.
  • iii āœ… Gingelly (sesame) oil has a low melting point, so it remains liquid in winter.
  • iv āœ… Lipids are generally insoluble in water but soluble in organic solvents.
  • v āœ… Esterification of one fatty acid with glycerol forms a monoglyceride.

šŸ“Œ NCERT: Lipids are water-insoluble organic compounds; fatty acids may be saturated or unsaturated, and glycerol forms mono-, di- or triglycerides depending on the number of fatty acids esterified.

šŸ§  Quick Revision: Lecithin ā†’ Phospholipid Saturated ā†’ No C=CC=C Sesame oil ā†’ Low mp ā†’ Liquid Lipids ā†’ Organic-solvent soluble 1 FA + glycerol ā†’ Monoglyceride

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