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JEE Advanced levelSingle correct optionDifficulty 3 of 3bm160

The molecule adenosine -triphosphate (ATP) contains how many phosphoanhydride (P-O-P) linkages, and which sugar?

  1. Athree phosphoanhydride linkages and ribose
  2. Btwo phosphoanhydride linkages and ribose
  3. Ctwo phosphoanhydride linkages and 2-deoxyribose
  4. Dthree phosphoanhydride linkages and 2-deoxyribose

Answer: B

ATP has three phosphate groups. The first is joined to C5 of ribose by an ester bond, and the other two are joined by two P-O-P phosphoanhydride bonds. The sugar is ribose, not deoxyribose.
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