Why do cancer cells stay alive while healthy cells die?

Wich level of organization includes all the other levels or organizations

What processes take place before the mature mrna exits the nucleus?

Hydrogen has only one electron in its only (and outer) electron shell. if a hydrogen atom were to absorb a small amount of energy, where would bohr say the electron would go? a. fly off the atom b. nowhere, it would just speed up. c. spiral inwards towards the nucleus d. move up to another shell that would form