The diagram below shows the chemical structure of a type of lipid molecule called a phospholipid.

Atoms of five different elements make up the phospholipid molecule. Besides phosphorus, identify two other elements in the phospholipid.

Atoms of five different elements make up the phospholipid molecule. Besides phosphorus, identify two other elements in the phospholipid.

The building block (monomer) of lipids is labeled X in the diagram. Identify this building block of lipids.

Lipids have important functions in the body. Describe two functions of lipids in the human body.

Answer No 1:

Phospholipids are made up of phosphorus head and two fatty acid molecules. These phosphorus head and fatty acid tail is joined together by glycerol. Fatty acid molecules are made up of Carbon, hydrogen and oxyge. Hence, carbon and hydrogen can be said as two other elements present in phospholipids.

Answer No 2:

The building blocks of lipids are glycerol and fatty acids.

Lipids can be described as vital organic molecules which are not soluble in water. They are made up of chains of carbon, hydrogen and oxygen. Someof the examples of lipids are fats and oils. Lipids are the main molecules present in an organisms cell membrane and hence have huge biological importance.

Answer No 3:

Lipids are biologically important molecules as they play very vital roles in the functioning of an organisms body. Two of the functions of lipids are:

Lipids and phosphorus molecules combine to form phospholipids. The phospholipids are the main molecules out of which the cell membrane is made. Hence, lipids play an essential role in providing the cell membrane its structure. Lipids store energy and provide insulation to the body of an organism.