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61. Distinguish between oils and fats.

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62. Distinguish between unsaturated and saturated fatty acids.

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63. Distinguish between Aldose sugar and Ketose sugar.

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64. Distinguish between reducing and non-reducing sugars.

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65. Distinguish between Glycosidic bond and Peptide bond. Give one similarity

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66. Distinguish between pyranose and furanose rings.

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Purines

Pyrmidines

(1) Its molecules is double ringed.

(2) It is a nine membered ring.

(3) Its molecule is larger.

(5) For eg. Adenine and guanine.

(1) Its molecule is single ringed.

(2) It is six membered ring.

(3) lIts molecule is smaller.

(4) For e.g Thymine and cytosine.

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68. Write any three characteristic features of monosaccharides ?

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69. Describe nucleotides.

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70. What are macromolecules ? Give examples.

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