Science question according to cell theory all cells have a nucleus all cells are differentiated all cells reproduce by mitosis all living organisms are composed of cells

Heyo, your answer would be D.) All living organisms are composed of cells.

The three parts of cell theory you should remember is that it's considered to be the smallest unit of life, secondly that all living organisms are made up of cells, and lastly that all cells come from other cells (non-spontaneous generation).

Therefore, the answer would be the last option.

Hi there! Your answer would be:

D. All living organisms are composed of cells.

Explanation:

Not all cells have a nucleus, in fact, an entire species called prokaryotes don't have any at all as a rule!

Also, Not all cells are differentiated. Differentiation is a process when a simple cell turns into a new different cell. Some cells stay simple their whole life.

Mitosis is the process when single-celled organisms split into 2 identical daughter cells. Mitosis only works in single-celled organisms.

Hope this helped!