(1)which of the following organelles is the control center of a cell?
a. mitochondrion
b. ribosome
c. nucleus
d. chloroplasts?
(2) the invention of the microscope made it possible to discover what?
a. mitochondrion
b. ribosome
c. nucleus
d. chloroplasts?
(2) the invention of the microscope made it possible to discover what?