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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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Pyranose ring

Furanose ring

(1) It is hexagonal.

(2) It has five carbon atoms in the ring and one oxygen atom. e.g. glucose, galactose.

(1) It is pentagonal.

(2) It has four carbon atoms and one oxygen atom in the ring. e.g. fructose.

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67. Distinguish between Purines and Pyrimidines.

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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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