How does the severity of deterministic effects change with dose?

The severity of deterministic effects increases with the dose received because these effects are a consequence of exceeding a certain threshold of exposure to radiation. Deterministic effects, such as skin burns, cataracts, and radiation sickness, occur when the dose of radiation surpasses a level that causes cell kill or damage resulting in observable physical effects.

As the dose increases, the likelihood and severity of these effects also increase, since cells are exposed to heightened levels of ionizing radiation which can lead to more extensive damage to tissues. For example, with a higher dose of radiation, the chances that a certain fraction of cells will be negatively affected rises, meaning that individuals exposed to greater doses are more likely to experience significant health effects. This dose-response relationship in deterministic effects is linear within certain ranges, emphasizing that as exposure increases, so does the risk and intensity of negative outcomes.

Other choices do not accurately represent the relationship between dose and the severity of deterministic effects, as they either suggest no correlation or an inverse relationship, which does not align with the established understanding of radiation effects.