GED Science Practice 2025 – 400 Free Practice Questions to Pass the Exam

The term associated with the treatment of disease by exposure to radiation from a radioactive substance is radiation. This is a crucial concept in medical treatments, particularly in radiotherapy, where controlled doses of radiation are used to target and kill cancer cells. Radiation therapy takes advantage of the damaging effects that radiation has on both cancerous and normal cells, thereby aiming to control or eliminate tumors.

The context of this treatment involves the use of high-energy particles or waves, which can disrupt the cellular structure of malignant cells. This method is highly specialized and is an essential aspect of modern medicine in combating certain diseases, especially cancers.

Other choices mention terms that are relevant in different contexts. For example, recycling pertains to the processing of materials for reuse, reflex involves automatic responses in the body, and radioactivity is the property of certain substances to emit radiation but does not directly refer to the medical treatment process. Understanding the specific applications and definitions of these terms is important for grasping the broader topic of health and science.