Question

If a DNA molecule has 2000 BP, then calculate the number of sugar and phosphate molecules.

• A. 2000 sugar and 2000 phosphate molecules
• B. 2000 sugar and 4000 phosphate molecules
• C. 4000 sugar and 2000 phosphate molecules
• D. 4000 sugar and 4000 phosphate molecules

Answer 1

The correct option is D 4000 sugar and 4000 phosphate molecules

A DNA molecule of 2000 BP means it has 2000 bases on each strand, that is 4000 based on the two strands together. Each of these bases is connected to a sugar and each sugar is connected to one phosphate group. So total 4000 base, 4000 sugar, and 4000 phosphate molecules are present.

So the correct answer is '4000 sugar and 4000 phosphate molecules'.