Question

DNA is a ____1____ molecule having ____2____ charge.

• A. 1–hydrophobic, 2–negative
• B. 1–hydrophilic, 2–positive
• C. 1–hydrophilic, 2–negative
• D. 1–hydrophobic, 2–positive

Answer 1

The correct option is C 1–hydrophilic, 2–negative

DNA is a hydrophilic molecule having negative charge. Hydrophilic molecules, are those which has the tendency to dissolve readily in water. DNA is a hydrophilic in nature because of phosphorous present in phosphodiester bonds which has negative charge due to surplus electron and the phosphate backbone is exposed to surface, where they can interact easily with water.