Biology Notes FA FSc Chapter No 2 Biological Molecules
Question: 1 Define Biochemistry, write the types of
Molecules.
Biochemistry:
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.
Molecules:
Definition: “When two or more atoms of the same elements or
different elements are rounded together, they form a structure called
molecules.
Types:
The molecules occurring in the bodies of living organisms
are of two types.
Organic Molecules:
Definition:
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:
Definition:
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).