EMT Basic Certification Complete Practice Exam 2026

The primary characteristic of type 1 diabetes is indeed the lack of significant insulin production. This condition occurs when the body's immune system mistakenly attacks the insulin-producing beta cells in the pancreas, leading to very little or no insulin being produced. Insulin is crucial for allowing glucose, which comes from the food we eat, to enter cells for energy, so without it, glucose builds up in the bloodstream, resulting in high blood sugar levels.

In contrast, other conditions or characteristics mentioned in the multiple-choice options do not apply to type 1 diabetes. For instance, excessive insulin production is more relevant to type 2 diabetes or conditions like insulinomas. Management with oral medications can also pertain to type 2 diabetes, as patients with type 1 typically require insulin injections since their bodies do not produce insulin naturally. Finally, the absence of hyperglycemic conditions contradicts the very nature of diabetes, where elevated glucose levels are a hallmark of the disease, especially when insulin is not being produced.