Final answer:
Diabetes is a good example of the failure of a set point in humans as it disrupts the body's ability to regulate blood glucose levels. In type 1 diabetes, the destruction of beta cells in the pancreas leads to decreased insulin production. Type 2 diabetes is characterized by insulin resistance, where cells do not respond to normal amounts of insulin.
Step-by-step explanation:
In diabetes, the failure of a set point is demonstrated by the body's inability to regulate blood glucose levels. Type 1 diabetes is characterized by the destruction of beta cells in the pancreas, which are responsible for producing insulin. Without insulin, cells are not stimulated to take up glucose from the blood, resulting in high blood glucose levels. Additionally, in type 2 diabetes, cells become resistant to insulin, leading to elevated blood glucose levels.