Which term describes the biological damage caused by radiation exposure?

• A. Somatic effects
• B. Genetic effects
• C. Deterministic effects
• D. Stochastic effects

Answer: (A)

The term that describes the biological damage caused by radiation exposure is somatic effects. Somatic effects refer to the damage that occurs to the body of an individual who has been exposed to radiation. These effects can manifest as immediate or long-term health issues, such as skin damage, radiation sickness, cancer, or other organ-related problems. Importantly, somatic effects are not passed on to future generations; they only affect the individual who was exposed.

In contrast, genetic effects are related to changes or damage to the DNA in reproductive cells, which can be passed on to offspring. Deterministic effects refer to the severity of effects that increase with the dose of radiation received and generally have a threshold, meaning they will occur only above a certain dose level. Stochastic effects, on the other hand, are probability-based, meaning that they may or may not occur regardless of the dose, but their likelihood increases as the radiation dose increases. Thus, while all these terms relate to radiation exposure and its potential impacts, somatic effects specifically denote the damage experienced by the individual who received the exposure.