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When RNA is hydrolysed, there is no rela...

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?

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A DNA molecule has two strands in which the four complementary bases pair each other, i.e., cytosine (C) always pair with guanine (G) while thymine (T) always pairs with adenine (A). Thus, when a DNA molecule is hydrolysed, the molar amounts of cytosine is always equal to that of guanine and that of adenine is always equal to that of guanine and that of adenine is always equal to thymine. In RNA, there is no relationship between the quantities of four bases (C, G, A and U) obtained, therefore, the base pairing principle, i.e., A paris with U and C pairs with G is not followed. Therefore, unlike DNA, RNA has a single strand.
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NCERT ENGLISH-BIOMOLECULES-Exercise
  1. Why cannot vitamin C be stored in our body ?

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  2. What products would be formed when a nucleotide from DNA containing th...

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  3. When RNA is hydrolysed, there is no relationship among the quantities ...

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  4. What are monosaccharides?

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  5. What are reducing sugars ?

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  6. Write two main functions of carbohydrates in plants.

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  7. Classify the following into monosaccharides and disaccharides: Ribose,...

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  8. What do you understand by the term glycosidic linkage?

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  9. What is glycogen? How is it different from starch?

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  10. What are the hydrolysis products of (i) sucrose and (ii) lactose?

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  11. What is the basic structural difference between starch and cellulose?

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  12. What happenes when D-glucose is treated with the following reagents? ...

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  13. Enumerate the reactions of D-Glucose which cannot be explained by its ...

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  14. What are the essential and non-essential amino acids?Give two examples...

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  15. Define the following as related to proteins: (i) Peptide linkage (...

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  16. What are the common types of secondary structures for proteins?

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  17. What type of bonding helps in stabilising the a-helix structure of pro...

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  18. Differentiate between globular and fibrous proteins.

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  19. How do you explain the amphoteric behaviour of amino acids ?

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  20. What are enzymes ?

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