MPharm Master of Pharmacy Pharmacognosy and Natural Products

Question 1

Which class of secondary metabolites includes morphine, quinine, and vincristine?

Accepted Answer

Alkaloids

Answer

Terpenoids

Answer

Flavonoids

Answer

Glycosides

Question 2

What is the pharmacologically active component of the foxglove plant (Digitalis purpurea) used in cardiac therapy?

Accepted Answer

Digoxin and digitoxin (cardiac glycosides)

Answer

Atropine

Answer

Quinine

Answer

Reserpine

Question 3

Which extraction technique is most commonly used to isolate essential oils from plant material in pharmacognosy?

Accepted Answer

Steam distillation

Answer

Soxhlet extraction

Answer

Cold maceration

Answer

Ultrasound-assisted extraction

Question 4

Artemisinin, the antimalarial compound derived from Artemisia annua, belongs to which chemical class?

Accepted Answer

Sesquiterpene lactone endoperoxide

Answer

Alkaloid

Answer

Flavonoid glycoside

Answer

Triterpene saponin

Question 5

Which test is used to detect the presence of tannins in plant extracts?

Accepted Answer

Ferric chloride test

Answer

Molisch's test

Answer

Biuret test

Answer

Benedict's test

Question 6

Which plant is the natural source of taxol (paclitaxel), an important anticancer agent?

Accepted Answer

Taxus brevifolia (Pacific yew)

Answer

Vinca rosea

Answer

Catharanthus roseus

Answer

Podophyllum peltatum