• Biochemistry is a branch of science that is applied in various fields within Health Sciences. It is the study of various chemical processes within the cells. The very basic understanding of biochemistry has it been known for ages, is that it only entails the study of chemicals of life e.g Carbohydrates, Proteins, Lipids and Vitamins. But as we currently know, biochemistry entails much more than just nutrients. So much more than it overlaps so many disciplines in the field of medicine. 
• For that reason, many people argue that biochemistry should not be classified as a stand-alone discipline but rather as a tool. However much arguments they can present on the table, the fact remains that it is a discipline on its own and we agree that is it also a tool. Biochemistry is applied in virtually all health-related sciences such as medicine, pharmacy, Medical laboratory, microbiology, parasitology, dentistry, nutrition, and the list goes on.
• A fact you need to know is that biochemistry requires tiny details, it is this aspect of biochemistry that makes it "tough or hard" as some people may describe it.  Through the series of these lectures, you will be able to understand hopefully many essentials of biochemistry for the undergraduate level. 

          Now,  A biochemist is not a teacher who has specialized in biology and chemistry, that gap is too wide and there exists no relation at all.