Enhance your understanding of Toxicology with MCQs covering basic principles, types of toxins, and their effects. Prepare effectively for exams with targeted questions and explanations.
- What is toxicology?
- A) Study of beneficial effects of drugs
- B) Study of adverse effects of chemicals on living organisms
- C) Study of herbal medicine
- D) Study of genetic disorders
- Answer: B
- Toxicity refers to:
- A) The beneficial effects of a substance
- B) The ability of a chemical to cause harm
- C) The concentration of a drug in the blood
- D) The natural healing properties of herbs
- Answer: B
- Which statement about poisons is true?
- A) All substances are non-toxic at high doses
- B) The dose differentiates a poison from a remedy
- C) Only synthetic chemicals can be poisons
- D) Poisons only affect specific organs
- Answer: B
- Toxicity can occur in which way?
- A) Accidental exposure
- B) Intentional overdose
- C) Adverse drug reactions
- D) All of the above
- Answer: D
- Occupational exposure to toxins is most commonly associated with:
- A) Pesticides and heavy metals
- B) Water pollution
- C) Noise pollution
- D) Ultraviolet radiation
- Answer: A
- The first line of treatment in toxicity management is:
- A) Forced diuresis
- B) Supportive care
- C) Induced emesis
- D) Hemodialysis
- Answer: B
- Which procedure is used to decrease gastrointestinal absorption of ingested toxins?
- A) Forced diuresis
- B) Mechanical ventilation
- C) GI lavage
- D) Antidote administration
- Answer: C
- Activated charcoal works by:
- A) Absorbing toxins in the gastrointestinal tract
- B) Neutralizing stomach acid
- C) Increasing urine production
- D) Enhancing liver metabolism
- Answer: A
- The most common route of exposure for accidental poisoning in children is:
- A) Inhalation
- B) Ingestion
- C) Injection
- D) Skin absorption
- Answer: B
- Supportive care in toxicity management may involve:
- A) Mechanical ventilation
- B) Intravenous fluids
- C) Cardiovascular support
- D) All of the above
- Answer: D
- An antidote works by:
- A) Increasing the absorption of the poison
- B) Inhibiting the body’s detoxification pathways
- C) Neutralizing or counteracting the effects of a poison
- D) Enhancing poison reabsorption
- Answer: C
- Which of the following treatments is used to enhance drug elimination in toxicity?
- A) Forced diuresis
- B) GI lavage
- C) Mechanical ventilation
- D) Antidote administration
- Answer: A
- Which of these substances can be a specific antidote?
- A) Water
- B) Milk
- C) Activated charcoal
- D) Naloxone
- Answer: D
- A common toxic effect of heavy metals includes:
- A) Neurological damage
- B) Increased immunity
- C) Enhanced muscle growth
- D) Improved digestion
- Answer: A
- A poison that affects the respiratory system is most likely to cause:
- A) Bronchodilation
- B) Difficulty breathing
- C) Improved lung function
- D) Increased oxygen absorption
- Answer: B
- Inhalation exposure to toxic gases is common in:
- A) Agricultural settings
- B) Industrial environments
- C) Offices
- D) Forests
- Answer: B
- The term “acute toxicity” refers to:
- A) Long-term exposure to toxins
- B) Short-term, high-level exposure to a toxic substance
- C) Toxins that affect only specific organs
- D) Toxins that are always fatal
- Answer: B
- Chronic toxicity results from:
- A) A single high dose exposure
- B) Continuous exposure over time
- C) Immediate reaction to toxins
- D) Exposure to nontoxic substances
- Answer: B
- What is a chelating agent used for?
- A) Binding to heavy metals to facilitate their excretion
- B) Increasing the absorption of poisons
- C) Reducing blood pressure
- D) Enhancing protein synthesis
- Answer: A
- Which heavy metal is commonly associated with neurological toxicity?
- A) Iron
- B) Lead
- C) Sodium
- D) Calcium
- Answer: B
- Which is an example of supportive care in toxicology?
- A) Administering a chelating agent
- B) Using an antidote
- C) Providing intravenous fluids
- D) Inducing vomiting
- Answer: C
- Hepatic biotransformation refers to:
- A) Kidney excretion of toxins
- B) Transformation of toxins in the liver
- C) Lung absorption of toxins
- D) Stomach digestion of poisons
- Answer: B
- GI lavage involves:
- A) Administering activated charcoal
- B) Washing out the contents of the stomach
- C) Increasing urine output
- D) Enhancing liver function
- Answer: B
- Hemodialysis can be used to:
- A) Enhance the absorption of a poison
- B) Increase drug excretion in the urine
- C) Filter toxins from the blood
- D) Stimulate liver detoxification
- Answer: C
- Which type of toxin exposure is most likely in occupational settings?
- A) Accidental ingestion
- B) Intentional poisoning
- C) Inhalation of toxic fumes
- D) Intravenous administration
- Answer: C
- Intentional poisoning often involves:
- A) Accidental contact with toxins
- B) Ingestion of a toxic substance for self-harm
- C) Environmental contamination
- D) Occupational exposure
- Answer: B
- Which chemical is commonly used to treat cyanide poisoning?
- A) Naloxone
- B) Activated charcoal
- C) Sodium thiosulfate
- D) Epinephrine
- Answer: C
- Pesticide poisoning primarily affects which organ system?
- A) Nervous system
- B) Skeletal system
- C) Endocrine system
- D) Integumentary system
- Answer: A
- Environmental toxins can be found in:
- A) Air, water, and soil
- B) Vaccines
- C) Medication containers
- D) Computer screens
- Answer: A
- The purpose of using antidotes in toxicology is to:
- A) Stimulate the absorption of the toxin
- B) Neutralize or reduce the toxicity of a substance
- C) Enhance the body’s immune response
- D) Increase the dose of the toxic substance
- Answer: B
