Pharmacy Freak Editorial Team

Introduction: The use of radioactive isotopes in biogenetic studies provides powerful tools for tracing biochemical pathways, elucidating metabolic flux, and characterizing drug metabolism and pharmacokinetics. Radioisotopes such as 14C, 3H, 32P, 35S, 99mTc and 18F enable radiolabeling of small molecules, nucleic acids and proteins for autoradiography, scintillation counting, PET/SPECT imaging and receptor-binding assays. Understanding half-life, … Read more

Amino acid pathway MCQs With Answer is a focused review for B. Pharm students covering amino acid metabolism, biosynthesis and catabolism, transamination, the urea cycle, and one‑carbon (folate/B12) pathways. This concise, keyword‑rich introduction highlights essential topics: amino acid pathways, enzymes (aminotransferases, dehydrogenases, hydroxylases), cofactors (PLP, THF, BH4, B12), regulation, essential vs nonessential amino acids, and … Read more

Acetate pathway MCQs With Answer The acetate pathway encompasses biochemical routes that produce or consume acetate, including the bacterial phosphotransacetylase–acetate kinase (Pta–Ack) system, acetyl-CoA synthetase reactions, and the Wood–Ljungdahl (reductive acetyl‑CoA) pathway in acetogens. For B. Pharm students, understanding enzymes (acetate kinase, phosphotransacetylase, acetyl‑CoA synthetase), cofactors (CoA, ATP, TPP), bioenergetics, metabolic regulation, and links to … Read more

Understanding the Shikimic acid pathway is essential for B. Pharm students because the shikimate pathway (shikimic acid pathway) produces aromatic amino acids (phenylalanine, tyrosine, tryptophan) and many secondary metabolites, and is a key target in drug and herbicide development. This concise review highlights critical enzymes (DAHP synthase, shikimate dehydrogenase, shikimate kinase, EPSP synthase, chorismate synthase), … Read more

Understanding the formation of secondary metabolites is essential for B. Pharm students studying pharmacognosy, drug discovery, and natural product chemistry. This introduction covers biosynthetic pathways, key enzymes, and genetic regulation that drive production of alkaloids, terpenoids, and phenolics in plants, microbes, and fungi. Emphasis is placed on pathway intermediates, enzyme classes (like polyketide synthases and … Read more

Understanding basic metabolic pathways in plants is essential for B.Pharm students, as these pathways underlie drug biosynthesis, herbicide action, and plant–drug interactions. This concise overview links core processes—glycolysis, the tricarboxylic acid (TCA) cycle, oxidative phosphorylation, the Calvin cycle, and photorespiration—to energy flow, ATP production, and biosynthesis of primary and secondary metabolites. Emphasis on key enzymes, … Read more

Introduction to metabolic pathways in higher plants is essential for B. Pharm students studying plant-derived drugs and phytochemistry. This concise overview covers primary metabolism — photosynthesis, glycolysis, the Calvin cycle, TCA cycle and respiration — and secondary metabolism that produces alkaloids, flavonoids, terpenoids and phenolics. Emphasis is on enzyme regulation, metabolic flux, compartmentalization in chloroplasts, … Read more

Introduction Bioassay of serotonin (5-HT) is a core pharmacology topic for B. Pharm students, covering experimental techniques to measure 5-HT activity, potency and efficacy using isolated tissues and receptor-specific responses. This introduction links concepts such as receptor subtypes (5-HT1–5-HT7), agonists and antagonists, dose–response curves, EC50, pA2, Schild analysis, organ bath assays (guinea pig ileum, rabbit … Read more

Introduction: Bioassay of histamine is a fundamental pharmacology topic for B.Pharm students, covering histamine bioassay principles, isolated tissue preparations, receptor pharmacology (H1, H2), and quantitative dose-response analysis. This introduction highlights key concepts such as guinea pig ileum and rabbit aorta assays, EC50/ED50 determination, potency versus efficacy, cumulative versus non‑cumulative dosing, antagonists, and statistical evaluation like … Read more

Introduction: The bioassay of digitalis MCQs With Answer provides B. Pharm students a focused review of cardiac glycoside pharmacology, bioassay techniques, potency estimation, and therapeutic implications. This concise guide emphasizes digitalis (digoxin, digitoxin) mechanism of action on Na+/K+‑ATPase, inotropic effects, assay tissues (isolated frog heart, atria), experimental design (parallel line and slope‑ratio assays), sources of … Read more