Lipids Biochemistry Essay Questions And Answers

Lipids

Classify lipids, and give examples. Give an account of essential fatty acids. (or) Classification of lipids with two examples for each. (or) Essential fatty acids
Answer:

Lipids:

Lipids are organic substances relatively insoluble in water, soluble in organic solvents, actually or potentially related to fatty acids, and utilized by living cells.

Classification:

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Essential fatty acids:

Definition:

The fatty acids that cannot be synthesized by the body and therefore, should be supplied in the diet are known as essential fatty acids.

Chemical nature:

• They are polyunsaturated fatty acids.
• They are linoleic acid and linolenic acid.

Functions:

Required for

1. Membrane structure and function
2. Transport of cholesterol
3. Formation of lipoproteins
4. Prevention of fatty liver
5. Synthesize of eicosanoids.

Structure:

Deficiency:

• The deficiency of essential fatty acids leads to phrynoderma or toad skin.
• Its clinical features are:

1. Horny eruptions on the posterior and lateral parts of limbs, on the back and buttocks.
2. Loss of hair.
3. Poor wound healing.