Macromolecules such as folded proteins or double helical DNA do not have "holes" or "bubbles" inside mainly because of

Macromolecules such as folded proteins or double helical DNA do not have "holes" or "bubbles" inside mainly because of

Macromolecules such as folded proteins or double helical DNA do not have "holes" or "bubbles" inside mainly because of 




A. hydrogen bonding
B. ionic attraction
C. magnetism
D. Coriolis forces
E. van der Waals forces



Answer: E