Biochemistry

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| By Manmacsr
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Manmacsr
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Quizzes Created: 1 | Total Attempts: 207
| Attempts: 207
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  • 1/4 Questions

    'Which of the following statements best characterize glucose?

    • It usually exists in the furanose form
    • It is a ketose
    • It forms part of the disaccharide sucrose
    • Only the L-isomer can be transported into mammalian cells
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About This Quiz

Covers chemical stucture of biomoleculesmajor biomolecules are carbohydrates, lipids, proteins and nucleic acids

Biochemistry Quizzes & Trivia

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  • 2. 

    As a rule, the number of isomers that a sugar has depends on

    • the number of chiral carbons

    • the kind of substituents

    • the number of alcohol groups present

    • its anomeric carbon

    Correct Answer
    A. the number of chiral carbons
    Explanation
    the number of isomers is equal to the square of the number of chiral or assymetric carbon atoms (n raised to 2nd power). Thus glucose has 4 chiral carbons; its isomers total 16 (4 raised to the power 2).

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  • 3. 

    The simplest of the hydrated carbons, with the formula (CH2O1) is called

    • dihydroxyacetone

    • formaldehyde

    • pyranose

    • Glyceraldehyde

    Correct Answer
    A. Glyceraldehyde
    Explanation
    glyceraldehyde fulfills the definition of carbohydrate: "polyhydroxyaldehydes or ketones". It has an aldehyde (-CHO) and 2 (i.e. poly) hydroxyl (-0H) groups.

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  • 4. 

    All of the following are composed exclusively of glucose, EXCEPT:

    • amylose

    • lactose

    • cellulose

    • Maltose

    • glycogen

    Correct Answer
    A. lactose
    Explanation
    lactose is made up of glucose + galactose; all the others are made up of glucose only

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  • Mar 21, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 07, 2009
    Quiz Created by
    Manmacsr
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