Simple, prokaryotic organisms have been on earth for over 3 billion years and have been able to grow and evolve into many different and successful prokaryotic organisms. which structure evolved in cells approximately one billion years ago that allowed for the forming of more complex, multicellular organisms?
a) nucleus
b) ribosome
c) plasma membrane
d) golgi apparatus

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

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.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?