Final answer:
Type 1 diabetes is a chronic autoimmune disorder where the immune system attacks the insulin-secreting beta cells of the pancreas. Insulin injections are necessary for survival.
Step-by-step explanation:
Type 1 diabetes is a chronic autoimmune disorder in which the immune system attacks the insulin-secreting beta cells of the pancreas. This leads to a lack of insulin production, which is necessary to regulate blood glucose levels. Insulin injections are critical for survival in people with type 1 diabetes.