Question

1. Cell organelles perform ........... functions in all organisms. 2. Cell theory was refined by ......... .

Answer 1

Answer:

1. Cell organelles perform specific functions in all organisms.
2. The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.