Biology Notes FA FSc Chapter No 2 Biological Molecules
Question: 1 Define Biochemistry, write the types of Molecules.
Definition: “it is the branch of biology which deaths with the structure, composition, function and chemical processes of molecules and compounds that are present in the bodies of a living organism.”
The most common element by number in the body is hydrogen, next is oxygen.
Definition: “When two or more atoms of the same elements or different elements are rounded together, they form a structure called molecules.
The molecules occurring in the bodies of living organisms are of two types.
1) Those molecules which contain carbon as a basic element, bounded with hydrogen atoms are known as organic molecules.”
Examples: The organic molecules present in living organisms are carbohydrates, protein, lipids, nucleic acids, enzymes hormones etc.
2) Inorganic molecules:
Those molecules which do not contain carbon as basic elements or hydrogen is not directly bonded with carbon are known as inorganic molecules.”
Exhales: The Inorganic molecules present in the body of living organisms is water minerals (ions).