Chapter 2 (Biological Molecules) F.Sc 1st Year Short Questions

What is the chemical nature of phospholipids?

Phospholipids are derivatives of phosphatidic acid, which are composed of glycerol, fatty acids and phosphoric acid.

Name the nitrogenous bases, which are important components of phospholipids.

Nitrogenous bases such as choline, ethanolamine and serine are important components of phospholipids.

Where are phospholipids found?

They are widespread in bacteria, animal and plant cells and are frequently associated with membranes.

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What are terpenoids? Give examples.

Terpenoids are lipids which are made up of simple repeating units, isoprenoid. units. This unit by condensation in different ways gives rise to compounds such as rubber, carotenoids, steroids, terpenes etc.

What are the most abundant organic compounds to be found in cells?

Proteins are the most abundant organic compounds to be found in cells and comprise over 50% of their total dry weight.

What are proteins?

Proteins are polymers of amino acids, the compounds containing carbon, nitrogen, oxygen and hydrogen.

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