MCQs Quiz

Naphthoquinones are a class of quinone natural products characterized by a fused naphthalene‑quinone core with diverse biological activities including antimicrobial, anticancer and redox‑mediated cytotoxicity. For B. Pharm students, understanding naphthoquinone chemistry—structure, biosynthesis, electron transfer, phase I/II metabolism, structure–activity relationships (SAR), analytical methods and formulation—is essential. Although Taxus species are best known for taxanes like paclitaxel, … Read more

Introduction Artemisia species produce a rich array of other terpenoids besides artemisinin, including monoterpenes (camphor, 1,8‑cineole), sesquiterpene lactones (santonin, absinthin) and diverse diterpenes. For B.Pharm students, understanding chemical classes, biosynthetic enzymes (ADS, CYP71AV1, DBR2, ALDH1), extraction methods (steam distillation, solvent and supercritical CO2), analytical techniques (GC‑MS, HPLC) and pharmacological profiles (antimalarial action, toxicity, formulation) is … Read more

Iridoids – Gentian MCQs With Answer Iridoids are a class of monoterpenoid secondary metabolites characterized by a cyclopentanoid pyran framework, abundant in Gentiana species. For B.Pharm students, understanding iridoid chemistry, biosynthesis (from geraniol via iridoid synthase), common gentian markers such as gentiopicroside and amarogentin, and pharmacological roles (bitter stomachic, choleretic, hepatoprotective, anti-inflammatory) is essential for … Read more

Glycosides – Bitter Almond MCQs With Answer Glycosides are important phytoconstituents comprising a sugar (glycone) bonded to a non‑sugar moiety (aglycone). Bitter almond is a classical source of the cyanogenic glycoside amygdalin, relevant to pharmacognosy, toxicology and B.Pharm studies. Understanding classification (cyanogenic vs cardiac glycosides), enzymatic hydrolysis by β‑glucosidases (emulsin), release of hydrogen cyanide (prussic … Read more

Introduction: Glycosides in aloes are important phytoconstituents studied in pharmacognosy and B.Pharm curricula. Aloe latex contains anthraquinone glycosides (e.g., aloin, aloe-emodin glycoside) that yield aglycones and sugars on hydrolysis. These compounds exert stimulant laxative activity, have defined toxicities, and are key quality-control markers assessed by TLC, HPLC and chemical tests such as Bornträger’s and Molisch. … Read more

Glycosides – Senna MCQs With Answer Glycosides from Senna (Cassia spp.) are clinically important anthraquinone glycosides used as stimulant laxatives in pharmacy practice. B.Pharm students should master sennosides A and B chemistry, sources (Senna leaf, pods), extraction, analytical assays (HPLC, Bornträger’s test), mechanism (bacterial hydrolysis to active anthrone, stimulation of colonic motility and secretion), therapeutic … Read more

Resins – Colophony MCQs With Answer Resins such as colophony (rosin) are natural pine-derived materials rich in resin acids like abietic acid. For B.Pharm students, understanding their physicochemical properties, identification tests, compendial standards, pharmaceutical excipients roles (adhesives, plasters, emulsifiers), and safety concerns (contact dermatitis, oxidation) is essential. This set goes deeper into composition, chemical reactions … Read more

Resins – Myrrh MCQs With Answer Myrrh, an important oleo-gum-resin from Commiphora species (Burseraceae), is vital in pharmacognosy and B. Pharm curricula. This introduction covers botanical source, composition (volatile oils, resins, gums, and furano-sesquiterpenes), extraction by incision, physicochemical properties, analytical tests, pharmacological activities (antimicrobial, anti-inflammatory, wound healing) and therapeutic applications in dentistry and topical medicine. … Read more

Resins – Asafoetida MCQs With Answer Asafoetida is an oleo-gum-resin obtained mainly from Ferula species, valued for its characteristic sulfurous odor and diverse phytoconstituents. For B.Pharm students, understanding its composition—resinous fraction, gum, and volatile oil—plus key constituents such as ferulic acid derivatives and sulfur-containing compounds is essential. Study topics include pharmacognosy, extraction (steam distillation, solvent … Read more

Resins – Ginger MCQs With Answer Resins are complex, non-volatile, resinous substances produced by plants; ginger (Zingiber officinale) yields an important oleoresin rich in bioactive compounds. This concise introduction covers classification (resins, gum-resins, balsams, oleoresins), chemical nature (terpenoids, phenolics), pharmacognostic tests, extraction methods (solvent extraction, supercritical CO2), and pharmaceutical uses (excipients, adhesives, expectorants). Key keywords: … Read more