www.bbcnoun.com.ng EHS411 6/10 1. An single exposure or multiple exposures occurring over one or two days is called Acute exposure 2. A side effect that is harmful to the patient Acute effect 3. A scientific investigation involving the use of whole animal or human body In vivo testing 4. A drug that binds to a receptor and cause a physiologic response. Agonist 5. A scientific laboratory study that involves the use of a part or sample of the animal or human body separated from the entire system In vitro testing: 6. Substances absorbed across the lungs, skin or ingested intentionally or accidentally Xenobiotics 7. The toxic effect of the drug at site of first contact between the biologic system and the toxicant. Toxin 8. A personnel that instigates or enforces a code of practice in the conduct of safety for the work place. Safety officer 9. The person that carries out toxicity testing in environmental conditions is called Environmental health scientiest 10. A substance added to another substance to stabilize the active chemical or aid absorption is called Aldehydes