2. Biochemistry can be defined as the science concerned with the chemical basis of life The cell is the structural unit of living systems. Thus, biochemistry can also be described as the science concerned with the chemical constituents of living cells and with the reactions and processes they undergo. Biochemistry

3. The Aim of Biochemistry Is to Describe &Explain, in Molecular Terms, All Chemical Processes of Living Cells

4. Biochemistry describes in molecular terms: the structures,mechanisms, and chemical processes shared by all organisms and provides organizing principles that underlie life in all its diverse forms, principles we refer to collectively as the molecular logic of life. Biochemistry provides important insights and practical applications in medicine, agriculture, nutrition, and Industry.

5. What is matter ?

6. What is matter made of ?

8. Common Elements

9. What are elements made of ?

10. Atomic Structure

11. Structure of an Atom

12. Elements in Living and Non- Living Materials

13. Living and Non-living

14. Distinctive Properties of Living Systems Systems

15. Properties of Life

17. The hirerarchy in the molecular organization of cells

19. Organization Organismal level

21. The Levels of organization in cells

22. Structural hierarchy in the molecular organization of cells In this plant cell, the nucleus is an organelle containing several types of supramolecular complexes, including chromosomes. Chromosomes consist of macromolecules of DNA and many different proteins. Each type of macromolecule is made up of simple subunits—DNA of nucleotides (deoxyribonucleotides), for example.