Chemistry ยท Biology

Pharmacology and Therapeutics

1,699 Questions

Engage with critical pharmacology and therapeutics questions covering drug classifications and therapeutic mechanisms. Topics include chemical absorption, medication formulations, and pharmacogenomics. This collection is useful for students preparing for medical entrance, nursing, and science competitive examinations.

Chemical absorption routesDrug formulation typesMedication mechanismsEnzyme inhibitorsPharmacogenomic tests

Pharmacology and Therapeutics Questions

Multiple choice

The term 'bioavailability' refers to:

  1. The fraction of a drug that reaches systemic circulation

  2. The rate at which a drug is absorbed

  3. The time it takes for a drug to reach peak concentration

  4. The duration of a drug's action
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bioavailability refers to the fraction of a drug that reaches systemic circulation after administration, taking into account factors like absorption, first-pass metabolism, and bioavailability enhancers.

Multiple choice

Which of the following is NOT a factor that can affect drug distribution?

  1. Protein binding

  2. Tissue perfusion

  3. Drug lipophilicity

  4. Drug concentration
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Drug concentration is not a factor that directly affects drug distribution, as distribution is primarily determined by factors like protein binding, tissue perfusion, and drug lipophilicity.

Multiple choice

The process of converting a drug into a more polar and water-soluble form is known as:

  1. Phase I metabolism

  2. Phase II metabolism

  3. Biotransformation

  4. Excretion
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phase II metabolism involves the conjugation of drugs with polar molecules, such as glucuronic acid or sulfate, to increase their water solubility and facilitate excretion.

Multiple choice

The term 'first-pass metabolism' refers to:

  1. Metabolism of a drug before it reaches systemic circulation

  2. Metabolism of a drug after it reaches systemic circulation

  3. Metabolism of a drug in the liver

  4. Metabolism of a drug in the kidneys
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

First-pass metabolism occurs when a drug is metabolized before it reaches systemic circulation, typically in the liver or gut wall.

Multiple choice

Which of the following is NOT a stage in the drug approval process in India?

  1. Pre-clinical studies

  2. Clinical trials

  3. Regulatory review

  4. Marketing authorization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pre-clinical studies are not a stage in the drug approval process in India. They are conducted before clinical trials to assess the safety and efficacy of a drug in animals.

Multiple choice

Which of the following is NOT a common type of pharmaceutical product?

  1. Tablets

  2. Capsules

  3. Injections

  4. Suppositories
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Suppositories are not a common type of pharmaceutical product. They are a type of medication that is inserted into the rectum or vagina.

Multiple choice

Which of the following is NOT a common type of pharmaceutical packaging?

  1. Blister packs

  2. Bottles

  3. Tubes

  4. Ampoules
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ampoules are not a common type of pharmaceutical packaging. They are a type of glass container that is used to store injectable medications.

Multiple choice

Which of the following is NOT a common type of pharmaceutical dosage form?

  1. Tablets

  2. Capsules

  3. Injections

  4. Ointments
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ointments are not a common type of pharmaceutical dosage form. They are a type of topical medication that is applied to the skin.

Multiple choice

Which of the following oral medications for ED has the longest duration of action?

  1. Sildenafil (Viagra)

  2. Tadalafil (Cialis)

  3. Vardenafil (Levitra)

  4. Avanafil (Stendra)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tadalafil (Cialis) has a duration of action of up to 36 hours, compared to 4-6 hours for sildenafil (Viagra), 4-8 hours for vardenafil (Levitra), and 6-12 hours for avanafil (Stendra).

Multiple choice

Which of the following is NOT a contraindication to the use of oral medications for ED?

  1. Uncontrolled hypertension

  2. Recent myocardial infarction

  3. Severe liver disease

  4. Recreational drug use
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Recreational drug use is not a contraindication to the use of oral medications for ED.

Multiple choice

Which of the following drugs is commonly used to treat migraine headaches?

  1. Triptans

  2. Nonsteroidal anti-inflammatory drugs (NSAIDs)

  3. Opioids

  4. Anticonvulsants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Triptans, such as sumatriptan and zolmitriptan, are commonly used to treat migraine headaches due to their specific action on serotonin receptors in the brain.

Multiple choice

Which of the following is NOT a class of medications used in the treatment of pain?

  1. Opioids

  2. Nonsteroidal anti-inflammatory drugs (NSAIDs)

  3. Antidepressants

  4. Antipsychotics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Antipsychotics are not typically used in the treatment of pain.

Multiple choice

Which of the following is an example of a non-opioid analgesic?

  1. Morphine

  2. Ibuprofen

  3. Oxycodone

  4. Fentanyl
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ibuprofen is a non-opioid analgesic that belongs to the class of nonsteroidal anti-inflammatory drugs (NSAIDs).

Multiple choice

What is the primary mechanism of action of NSAIDs in the treatment of pain?

  1. Binding to opioid receptors in the central nervous system

  2. Inhibition of prostaglandin synthesis

  3. Activation of the descending pain inhibitory system

  4. Blocking the reuptake of serotonin and norepinephrine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

NSAIDs inhibit the synthesis of prostaglandins, which are involved in the inflammatory process and the perception of pain.

Multiple choice

What is the term for the use of a pain medication for a non-medical purpose?

  1. Tolerance

  2. Dependence

  3. Addiction

  4. Withdrawal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Addiction is the term for the use of a pain medication for a non-medical purpose.