Chemistry · 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
  1. Chlorotrianisene, Estrone, Estriol

  2. Diethylstilbestrol, Estrone, Fosfestrol

  3. Estriol, Diethylstilbestrol, Fosfestrol

  4. Chlorotrianisene, Diethylstilbestrol, Fosfestrol

  5. Estrone, Estriol, Fosfestrol

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct answer. Chlorotrianisene is a non-steroidal synthetic estrogen that was formerly used for the treatment of menopause, deficiencies in ovary function, and prostate cancer. Diethylstilbestrol is a synthetic non-steroidal estrogen that was first synthesised in 1938. Fosfestrol is a synthetic estrogen used as an antineoplastic agent.

Multiple choice
  1. Drugs

  2. Antibiotic treatment

  3. Oral Rehydration Solution (ORS)

  4. Antiseptic like Dettol or tincture

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gastrointestinal disorders are treated with oral medications (drugs), antibiotics for bacterial infections, and Oral Rehydration Solution (ORS) for dehydration. Antiseptics like Dettol or tincture are used for external wound disinfection and are not given internally for GI problems.

Multiple choice
  1. Quinine

  2. Chloroquine

  3. Antiquine

  4. Primaquine

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Quinine, Chloroquine, and Primaquine are well-established anti-malarial drugs used to treat or prevent malaria. "Antiquine" appears to be a fictional or misspelled drug name with no pharmaceutical validity - it doesn't exist as an anti-malarial medication.

Multiple choice
  1. Variegate porphyria

  2. Porphyria cutanea tarda

  3. Acute Intermittent porphyria

  4. Erythropoietic protoporphyria

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Porphyria cutanea tarda (PCT) is the most common type of porphyria and is associated with exposure to certain chemicals (alcohol, estrogen, hexachlorobenzene) and drugs. It is caused by decreased activity of uroporphyrinogen decarboxylase, leading to accumulation of uroporphyrin. This enzyme defect causes the characteristic blistering skin lesions and photosensitivity seen in PCT.

Multiple choice
  1. alkylating agent

  2. Chain-terminator

  3. Intercalator

  4. Demethylating agent, 5-azacytidine

  5. Maturation inhibitors

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Busulfan acts as an alkylating agent. It contains two sulfonyloxy groups,  which acts as  good leaving groups when the drug reacts with a nucleophile.

Multiple choice
  1. beta 1-adrenergic agonists

  2. phosphodiesterase inhibitors

  3. digoxin

  4. NCX

  5. SERCA

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Partial inhibition of the Na+ pump with digoxin reduces the Na+ electrochemical gradient, thus impeding NCX, so more Ca2+ remains in the cell to support the next beat.

Multiple choice
  1. Integrins

  2. Angiostatin

  3. Interleukins

  4. Cyclins

  5. Fibrin

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Integrins are a family of transmembrane glycoprotein receptors that mediate cell-matrix.They are involved in the anchoring of cells to an extracellular matrix. They affect tumour progression, and this has made them an appealing target for cancer therapy.

Multiple choice
  1. PTS system

  2. Permeases

  3. Peptones

  4. Siderophores

  5. ABC transportes

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Binding protein transport systems or ATP-binding cassette transporters are active in bacteria, archaea and eukaryotes. One of the major problems related with anti-cancer chemotherapy is the resistance against anti cancer drugs. The ATP-binding cassette transporters are a family of transporter proteins that are responsible for drug resistance and a low bioavailability of drugs by pumping a variety of drugs out of cells at the expense of ATP hydrolysis.