Multiple choice

Each strand of DNA has

  1. a free 5 prime NH2 group and a free 3 prime OH group

  2. a free 5 prime CH2 group and a free 3 prime OH group

  3. a free 5 prime OH group and a free 3 prime NH2 group

  4. a free 5 prime CO group and a free 3 prime OH group

  5. a free 5 prime OH group and a free 3 prime OH group
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Each strand of DNA has both a free 5 prime hydroxyl (OH) group and a free 3 prime OH group at the other end. Hence, this option is the correct answer.

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