This video covers two main topics. First part includes the introduction of biochemistry and various different biochemicals which are present in living organisms and what are their relative percentage.The second part of the lecture includes the importance of Carbon and how structure of carbon let it able to make thousands of different chemical compounds.It is seen that carbon is very important in the composition of different organic compounds. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.