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 Multiple Choice QuestionsShort Answer Type

131.

The two strands in DNA are not identical but are complimentary. Explain.

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132.

The two strands in DNA are not identical but are complimentary. Explain.

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 Multiple Choice QuestionsLong Answer Type

133. Write the important structural and functional differences between DNA and RNA.
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 Multiple Choice QuestionsShort Answer Type

134.

Compare α-D glucose with β-D glucose.

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135. State significance of primary and secondary structures of proteins.


The sequence in which the amino acids are arranged in a protein is called the primary structure of protein. The primary structure of protein determines its function and is critical to its biological activity. The change of just one amino acid in the sequence can alter its biological activity.

Secondary structure of proteins refers to the arrangement of polypeptide chains which arises as a result of hydrogen bonding. It arises due to regular folding of the back bone of polypeptide chain. It is two types.
(a) α-helix-Globular protein have α-helix structure.
(b) β-pleated-fibrous proteins have α-pleated structure.

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136.

What are the different types of RNA found in the cells of organisms? State the functions of each type.

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 Multiple Choice QuestionsLong Answer Type

137.

What are nucleic acids? Explain their functions in the synthesis of proteins.

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138.

Name the deficiency diseases caused due to lack of the vitamin A, C, E, B1, B12 B6and K. 

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 Multiple Choice QuestionsShort Answer Type

139.

State differences between α-helix and β-pleated sheet structure.

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140.

State differences between primary and secondary structure of a protein.

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