Monosaccharides in Mammals and Their Properties
25 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of compound is formed when water interacts with an aldehyde in aldoses?

  • Ketohexose
  • Pentose
  • Furanose
  • Aldehyde hydrate (correct)
  • Which structural feature distinguishes pyranose from furanose forms of monosaccharides?

  • The number of carbon atoms
  • The formation of a six-membered ring (correct)
  • The presence of hydroxyl groups
  • The presence of a keto group
  • Which carbon atoms are involved in forming the ring structure of pyranose?

  • C1 and C4
  • C1 and C5 (correct)
  • C2 and C5
  • C1 and C6
  • What is the result of the loss of water during the conversion of aldehyde hydrate in monosaccharides?

    <p>Establishment of a ring structure</p> Signup and view all the answers

    Which of the following is true regarding ketoses?

    <p>They can form ring structures similar to aldoses</p> Signup and view all the answers

    What is the predominant form of monosaccharides found in mammals?

    <p>D-form</p> Signup and view all the answers

    What do the D and L forms of monosaccharides indicate?

    <p>The arrangement of functional groups around a chiral center</p> Signup and view all the answers

    Which statement about D and L forms of monosaccharides is correct?

    <p>D and L forms have no relation to optical activity</p> Signup and view all the answers

    In terms of optical activity, what is true about D and L forms?

    <p>Both forms can have different rotations but are not related by light behavior</p> Signup and view all the answers

    Why are monosaccharides described as D or L?

    <p>They indicate the orientation of the hydroxyl group on the chiral carbon</p> Signup and view all the answers

    What is a major limitation of the Fehling and Benedict tests?

    <p>They are reduced by all monosaccharides and other reducing substances.</p> Signup and view all the answers

    Which substances can be detected using Fehling and Benedict tests?

    <p>All monosaccharides and other reducing substances</p> Signup and view all the answers

    What do Fehling and Benedict tests indicate when positive?

    <p>The presence of glucosuria.</p> Signup and view all the answers

    What was the primary purpose of developing the Fehling and Benedict tests?

    <p>To detect the general presence of glucose.</p> Signup and view all the answers

    Why are Fehling and Benedict tests considered non-specific?

    <p>They can be reduced by many other substances besides glucose.</p> Signup and view all the answers

    What is inositol classified as within the context of vitamins?

    <p>A member of the vitamin B-complex</p> Signup and view all the answers

    Which structure is inositol a part of?

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

    Inositol is described as a sugar alcohol of which chemical structure?

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

    Which of the following statements about inositol is true?

    <p>It is present in all tissues as lipositol.</p> Signup and view all the answers

    What role does inositol play in relation to phospholipids?

    <p>It is a component of phospholipids.</p> Signup and view all the answers

    What is the product formed when monosaccharides react with phenyl hydrazine?

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

    Which of the following compounds is mentioned as an example in the content?

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

    What chemical reaction is associated with the formation of Osazone?

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

    Which reagent is specifically used to create crystalline products from monosaccharides?

    <p>Phenyl hydrazine</p> Signup and view all the answers

    What type of organic compounds are referenced in relation to the formation of Ozazone?

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

    Study Notes

    Monosaccharides in Mammals

    • Most monosaccharides found in mammals are in the D-form.
    • The D and L forms do not relate to the direction of plane-polarized light rotation.

    General Properties of Monosaccharides

    • Monosaccharides contain either an aldehyde (-CHO) group in aldoses or a ketone (-C=O) group in ketoses.
    • They react with water to form unstable aldehyde hydrates.
    • Monosaccharides form rings between C1 and C5 (pyranose) or C2 and C5 (furanose).

    Fehling and Benedict Tests

    • These tests are used to detect glucosuria.
    • They are non-specific and can be reduced by all monosaccharides and other reducing substances like vitamin C and Aspirin.

    Ozazone Formation

    • Monosaccharides react with phenyl hydrazine (NH2NHC6H5) to form crystalline products called "Ozazone".

    Inositol

    • Inositol is the sugar alcohol of cyclohexane.
    • It is a member of the vitamin B-complex.
    • It is part of the structure of lipositol (phospholipids found in all tissues).

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Lec -1 CHO Biochemistry 1 PDF

    Description

    Explore the fascinating world of monosaccharides, focusing on their D-form, structural properties, and the biochemical tests used to analyze them. This quiz covers important reactions, such as ozazone formation and the role of inositol as a sugar alcohol. Test your knowledge on these essential carbohydrates and their significance in mammalian biology.

    More Like This

    Ch 5 (pp 67-75)
    46 questions

    Ch 5 (pp 67-75)

    SublimeSardonyx avatar
    SublimeSardonyx
    3.4 - Monosaccharides in Carbohydrates
    11 questions
    Classification of Monosaccharides
    13 questions
    Classification of Carbs: Monosaccharides
    9 questions
    Use Quizgecko on...
    Browser
    Browser