Final answer:
Biochemistry is the study of biomolecules structurally making up living organisms. Cells serve as the basic units of life and carry out biochemical processes, with cellular organelles playing key roles.
Step-by-step explanation:
Biochemistry is the study of the molecules of life, (biomolecules); those that structurally make up living organisms and function to keep them alive. Cells are the basic units of life and are responsible for carrying out the biochemical processes that occur within living organisms.
Cellular organelles play key roles in these processes, such as producing energy in mitochondria and detoxifying harmful substances in peroxisomes. The study of biochemistry helps us understand how cells and cellular organelles work together to maintain the proper functioning of living organisms.