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(i) Which vitamin deficiency causes rick...

(i) Which vitamin deficiency causes rickets ?
(ii) Name the base that is found in the nucleotide of RNA only.
(iii) Glucose on reaction with acetic acid gives glucose pentaacetate. What does it suggest about the structure of glucose ?

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(i) Vitamin D (ii) Uracil (iii) Glucose molecule has five -OH groups in its structural formula.
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(i) Which vitamin deficiency causes rickets? (ii) Name the base that is found in nucleotide of RNA only.

(i) Deficicency of which vitamin causes night-blindness ? (ii) Name the base that is found in nuvleotide of RNA only. (iii) Glucose on reaction with HI gives n-hexane. What does it suggest about the strcuture of glucose ?

The two monosaccharides are joined together by an oxide linkage formed by the loss of a water molecule. Such a linkage between two monosaccharide units through oxygen atom is called glycosidic linkage. In disaccharides, if the reducing groups of monosaccharides i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars, e.g., sucrose. On the other hand, sugars in which these functional groups are free, are called reducing sugars, for example, maltose and lactose. A non reducing disaccharide 'A on hydrolysis with dilute acid gives an equimolar mixture of D-(+)glucose and D-(+)-Fructose. Glucose on reaction with acetic acid gives glucose pentaacetate. What does it suggest about the structure of glucose ?

When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

DINESH PUBLICATION-BIOMOLECULES-QUESTIONS FROM BOARD EXAMINATIONS
  1. Write chemical name and source of vitamin C.

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  2. Classify vitamins A,B,C and D depending upon their solubility in water...

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  3. How are carbohydrates classified ?

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  4. Write the names of two water soluble vitamins.

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  5. (i) Which one of the following is a disaccharide : Starch, Maltose, Fr...

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  6. (i) Write the product obtained when D-glucose reacts with HCN. (ii) ...

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  7. (i) What is the difference between acidic amino acids and basic amino ...

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  8. (i) Write the product obtained when D-glucose reacts with NH(2)OH. (...

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  9. (i) Which one of the following is a polysaccharide : Starch, Maltose, ...

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  10. (i) Write one reaction of D-Glucose which cannot be explained by its o...

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  11. (i) Write the namews of two monosaccharides obtained on hydrolyssi of ...

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  12. (i) Draw the pyranose structure of glucose (ii) What type of linkage...

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  13. What is the difference between alpha-glucose and beta-glucose ? Write ...

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  14. What are carbohydrates ? Given important functions of carbohydrates.

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  15. (i) Which vitamin deficiency causes rickets ? (ii) Name the base tha...

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  16. (a) What are alpha-amino acids ? How are they related to proteins ? ...

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  17. Name two vitamins and their deficiency diseases.

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  18. (a) Write the product when D-glucose reacts with conc. HNO(3). (b) A...

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  19. (a) Name the branched chain component of starch. (b) Ribose in RNA a...

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  20. Deficiency of which vitamin causes scurvy ?

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