The dose which provides the chosen response in a given percentage of the test subjects is called what?

The dose which provides the chosen response in a given percentage of the test subjects is called what?

• A. Lethal Dose
• B. Effective Dose
• C. Response
• D. Additive Effects

Answer: (B)

The main idea is how the dose relates to producing a defined effect in a group. The term for the dose that causes a specified effect in a certain percentage of subjects is the effective dose. In toxicology and pharmacology, EDx (like ED50) describes the dose that yields the chosen response in x% of the population. This focuses on how much exposure is needed to reach a target level of response, not just death or any single outcome. Lethal dose refers specifically to the dose causing death in a population, which is a different, more extreme endpoint. The term “response” by itself is the observed effect, not the dose needed to achieve it. Additive effects describe how multiple substances interact, not the dose-response relationship for a single effect.

The main idea is how the dose relates to producing a defined effect in a group. The term for the dose that causes a specified effect in a certain percentage of subjects is the effective dose. In toxicology and pharmacology, EDx (like ED50) describes the dose that yields the chosen response in x% of the population. This focuses on how much exposure is needed to reach a target level of response, not just death or any single outcome.

Lethal dose refers specifically to the dose causing death in a population, which is a different, more extreme endpoint. The term “response” by itself is the observed effect, not the dose needed to achieve it. Additive effects describe how multiple substances interact, not the dose-response relationship for a single effect.