Final answer:
The statement 'type 1 diabetes is usually managed with exercise and diet alone' is incorrect as type 1 diabetes requires regular insulin injections for management.
Step-by-step explanation:
The incorrect statement concerning type 1 diabetes is that it is usually managed with exercise and diet alone. Unlike type 2 diabetes, which may be managed with lifestyle changes like diet and exercise, type 1 diabetes is a chronic autoimmune disorder that requires regular insulin injections because the pancreas no longer produces insulin. This disease is characterized by the destruction of the insulin-secreting beta cells in the pancreas, leading to uncontrolled blood glucose levels. Hence, insulin treatment is crucial for survival and maintenance of blood glucose levels within the normal range.