Chapter U4.74, Problem 1TAI

Interpretation Introduction

Interpretation:

The meaning of“too much”needs to be explained.

Concept introduction:

Toxicity of a substance is the harmful effects on living beings.

Answer to Problem 1TAI

How much is too much means the lethal dose of the substance. It is measured as the amount of the substance required per kg of the body weight having significant effect.

Explanation of Solution

LD 50 value is one important unit which is often used to measure toxicity. It means the amount of the toxic substance required per kg of the living being to kill 50 % of the cells.

Thus, toxicity is measured with respect to body weight of the living being.