Alkaloids 2025

Which of the following is classified as a tropane alkaloid?

• Vincristine

• Atropine

• Reserpine

• Morphine

Mescaline is structurally classified as a:

• Purine alkaloid

• Tropane alkaloid

• Phenylethylamine alkaloid

• Indole alkaloid

Which alkaloid was historically used in the treatment of schizophrenia and hypertension?

• Ajmalicine

• Reserpine

• Vinblastine

• Strychnine

What is the mechanism of action of scopolamine?

• Blocks neuromuscular junction

• Inhibits serotonin reuptake

• Antagonist at muscarinic receptors

• Inhibits dopamine

Which alkaloid is derived from Strychnos nux vomica?

• Ajmalicine

• Strychnine

• Vinblastine

• Codeine

Which of the following is an indole alkaloid?

• Caffeine

• Ajmaline

• Papaverine

• Lobeline

Which test gives an orange-red precipitate for alkaloids?

• Erlich's test

• Mayer's test

• Dragendorff's test

• Vitali Morin test

What is the primary pharmacological effect of morphine?

• Diuretic

• Analgesic

• Antipyretic

• Antidepressant

Which of the following is not a basic alkaloid?

• Cocaine

• Reserpine

• Morphine

• Atropine