Anatomy Part 1,2,3 - Should the sale of human organs

Anatomy

Part 1

Question: Should the sale of human organs be legal? If not, who is culpable: The buyer? The broker? The physician who harvests the organ? Or the physician who transplants the organ? Should there be any repercussions for the donor? 

Part 2: 

Vitamins relating to nutrition and metabolism (provide information on vitamin, importance etc.) (Formulate one scientific question for the reader) 

Renal Cortex as relating to the urinary system (provide information on this topic and formulate one scientific question). 

Part 3: 

QUESTION: What can we do to control our metabolism? 

Question: Describe lipids and proteins.  Describe what food source we can intake to gain these nutrients.