Classification of natural products
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Questions and Answers

What is morphine used as?

  • To manage cognitive disorders
  • As an anticancer treatment
  • To treat heart failure
  • As an analgesic (correct)
  • Which of the following plants contains a compound used to treat malaria?

  • Galanthus
  • Pacific yew
  • Cinchona (correct)
  • Foxglove
  • What is the term for the branch of pharmacy that prepares medicines by infusion, decoction, etc.?

  • Pharmacology
  • Nutraceuticals
  • Galenical pharmacy (correct)
  • Phytotherapy
  • Which of the following is an example of a nutraceutical or 'functional food'?

    <p>Garlic</p> Signup and view all the answers

    What is the term for isolated compounds from nature that are produced synthetically?

    <p>Nature identical</p> Signup and view all the answers

    Which of the following is NOT an example of an isolated compound from nature?

    <p>Garlic</p> Signup and view all the answers

    What are the essential characteristics of a method of classification?

    <p>Simple, easy to use, and free from confusion and ambiguities</p> Signup and view all the answers

    How many different ways are drugs classified for the purpose of study?

    <p>6</p> Signup and view all the answers

    What is the basis of morphological classification?

    <p>Morphological or external characters</p> Signup and view all the answers

    What are the drugs obtained from dried plant parts with cellular tissues called?

    <p>Organized drugs</p> Signup and view all the answers

    What are the drugs prepared from plants by intermediate physical processes called?

    <p>Unorganized drugs</p> Signup and view all the answers

    Which of the following is an example of an unorganized drug?

    <p>Aloe juice</p> Signup and view all the answers

    What is the primary function of leaves in a plant?

    <p>To collect and assimilate the sun's energy</p> Signup and view all the answers

    What is the classification system based on principles of natural relationship and evolutionary developments?

    <p>Taxonomical Classification</p> Signup and view all the answers

    What is a characteristic way to identify a species of plant?

    <p>By the arrangement of its leaves on the stem</p> Signup and view all the answers

    Which part of a plant is responsible for accumulating biologically active substances?

    <p>Bark</p> Signup and view all the answers

    What is the main purpose of a flower in a plant?

    <p>To serve as a reproductive organ</p> Signup and view all the answers

    What is the classification of natural products based on their pharmacological action?

    <p>Pharmacological Classification</p> Signup and view all the answers

    What is the primary basis of pharmacological or therapeutic classification of drugs?

    <p>Therapeutic action</p> Signup and view all the answers

    Which of the following groups of drugs are classified based on their chemical nature?

    <p>Crude drugs</p> Signup and view all the answers

    What is the primary characteristic of carbohydrates?

    <p>Unbroken chain of carbon atoms</p> Signup and view all the answers

    What is the classification of riboflavin?

    <p>Vitamin</p> Signup and view all the answers

    What is the classification of Castor oil?

    <p>Fixed oil</p> Signup and view all the answers

    What is the main difference between primary and secondary metabolites?

    <p>Function in the plant</p> Signup and view all the answers

    What is the primary purpose of storing dried extracts at -20°C?

    <p>To prevent degradation of bioactive natural products</p> Signup and view all the answers

    What is the main principle behind the partitioning separation method?

    <p>Solubility of natural products in different solvents</p> Signup and view all the answers

    What is the typical outcome of partitioning using water and light petroleum ether (hexane)?

    <p>A non-polar fraction in the organic layer</p> Signup and view all the answers

    Which type of natural products are easily separated from others using partitioning?

    <p>Monoterpenes and phenolics such as tannins</p> Signup and view all the answers

    What is the purpose of the initial extract purification and 'clean up' step in separation methods?

    <p>To remove impurities and concentrate the extract</p> Signup and view all the answers

    What is the characteristic of the separation method used in partitioning?

    <p>It is based on the solubility of natural products</p> Signup and view all the answers

    What is the primary significance of tropane alkaloids in Solanaceae?

    <p>They serve as a chemotaxonomic marker</p> Signup and view all the answers

    What is the main advantage of the latest system of classification of natural products?

    <p>It provides more scope for understanding the relationship between chemical constituents, their biosynthesis and their possible action</p> Signup and view all the answers

    Why is it important to remove solvent immediately after extraction?

    <p>To prevent instability of the natural products in the solvent</p> Signup and view all the answers

    What is the purpose of freeze-drying aqueous extracts?

    <p>To improve the shelf life of the extract</p> Signup and view all the answers

    What is the characteristic of berberine alkaloid in Berberis and Argemon?

    <p>It serves as a chemotaxonomic marker</p> Signup and view all the answers

    What is the purpose of using rotary evaporators in the extraction process?

    <p>To concentrate the extract under vacuum</p> Signup and view all the answers

    What is the significance of coniine in Conium maculatum?

    <p>It is of little taxonomic significance</p> Signup and view all the answers

    What is the purpose of classification of natural products based on their chemical constituents?

    <p>To understand the relationship between the chemical constituents and their possible action</p> Signup and view all the answers

    What is the characteristic of Rutin in Rutaceae members?

    <p>It serves as a chemotaxonomic marker</p> Signup and view all the answers

    What is the primary purpose of evaporation and storage methods in the extraction process?

    <p>To preserve the natural products and improve their shelf life</p> Signup and view all the answers

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