TOXICOLOGY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

TOXICOLOGY EXAMINATION QUESTIONS AND CORRECT
ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE
SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Toxicology is the study of:
A. Harmful effects of substances on living organisms
B. Weather patterns
C. Plant growth only
D. Rocks and minerals
Answer: A
Rationale: Toxicology focuses on poisons and their effects.

2. A toxic substance is also called a:
A. Toxicant
B. Nutrient
C. Vitamin
D. Enzyme
Answer: A
Rationale: Any harmful chemical is a toxicant.

3. The dose-response relationship describes:
A. Effect of dose on organism response
B. Weather change
C. Plant growth
D. Chemical color change
Answer: A
Rationale: Higher dose often increases effect.

4. LD50 means:
A. Dose lethal to 50% of test population
B. Low dose 50
C. Light dose 50
D. Liquid dose 50
Answer: A
Rationale: Standard toxicity measurement.

5. Toxicity refers to:
A. Degree of harm caused by a substance

, B. Drug effectiveness
C. Plant nutrition
D. Weather severity
Answer: A
Rationale: Harmful potential of chemicals.

6. Acute toxicity occurs after:
A. Short-term exposure
B. Long-term exposure
C. No exposure
D. Only ingestion
Answer: A
Rationale: Immediate toxic effects.

7. Chronic toxicity results from:
A. Long-term exposure
B. Single exposure
C. No exposure
D. Heat exposure only
Answer: A
Rationale: Prolonged exposure effects.

8. A poison is:
A. Substance causing harm or death
B. Nutrient
C. Vitamin
D. Medicine always
Answer: A
Rationale: Harmful at sufficient dose.

9. The Paracelsus principle states:
A. Dose makes the poison
B. All chemicals are safe
C. No chemicals are toxic
D. All drugs are harmless
Answer: A
Rationale: Toxicity depends on dose.

10. Exposure route includes:
A. Inhalation, ingestion, dermal

, B. Only ingestion
C. Only inhalation
D. Only skin
Answer: A
Rationale: Entry pathways.

11. Inhalation exposure occurs through:
A. Breathing
B. Eating
C. Drinking
D. Injection only
Answer: A
Rationale: Entry via lungs.

12. Ingestion exposure occurs through:
A. Mouth
B. Skin
C. Eyes
D. Lungs
Answer: A
Rationale: Oral intake route.

13. Dermal exposure occurs through:
A. Skin contact
B. Eating
C. Breathing
D. Injection
Answer: A
Rationale: Absorption through skin.

14. Toxicokinetics studies:
A. Movement of toxins in body (ADME)
B. Weather patterns
C. Drug color
D. Plant growth
Answer: A
Rationale: Absorption, distribution, metabolism, excretion.

15. Toxicodynamics studies:
A. Effects of toxins on body