Multiple choice

With reference to the properties of sugars in DNA, fill in the blanks.

The ribose sugar and deoxyribose sugar are ____ carbon sugars and they both differ in an oxygen (O) at ___ position.

  1. 5; 1'

  2. 6; 3'

  3. 6; 2'

  4. 5; 2'
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The deoxyribose sugar has an 'H' instead of 'OH' at 2' position. The nitrogenous bases bind to the 1' position of the sugars by glycosidic bonds. Silencing of the 1' position will hinder the glycosidic bond formation and thereby disrupting the complete structure.

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