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(i) Deficicency of which vitamin causes ...

(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 ?

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(i) Deficiency of vitamin A causes night blindness.
(ii) Uracil is present in nucleotide of RNA only.
(iii) This shows that six carbon atoms in glucose are linked by straight chains.
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(i) Which vitamin deficiency causes rickets? (ii) Name the base that is found in nucleotide of RNA only.

(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 ?

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 ?

(i) Deficiency of which vitamin causes scurvy ? (ii) What type of linkage is responsible for the formation of proteins ? (iii) Wrtie the product formed when glucose is treated with HI.

Deficiency of which vitamin causes rickets ? (ii) Given an example for each of fibrous protein and globular protein. (iii) Write the product formed on reaction of D-glucose with Br_(2) water.

Name the vitamins, deficiency of which cause (i) Night-blindness (ii) Rickets (iii) Poor coagulation of blood (iv) Impotency

DINESH PUBLICATION-BIOMOLECULES-QUESTIONS FROM BOARD EXAMINATIONS
  1. What is Glycogen ? How does it differ from starch ?

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  2. (i) Which of the following biomolecules is insoluble in water ? Justif...

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  3. (i) Deficicency of which vitamin causes night-blindness ? (ii) Name ...

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  4. What are carbohydrates ? How are they classified ? Give example of eac...

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  5. What are coenzymes ? Give example.

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  6. Differentiate between globular and fibrous proteins.

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  7. Write chemical name and source of vitamin C.

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

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  9. How are carbohydrates classified ?

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  10. Write the names of two water soluble vitamins.

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

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

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

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

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

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

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

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

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

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

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