What occurred during the phase before the phase shown above? The mitotic spindle fibers pulled apart sister chromatids.
The nuclear envelope reappeared and the cell prepared to divide,
The nucleus dissolved and the microtubules attached to the chromosomes.
Chromosomes lined up at the middle of the cell.

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.