Answer:
The statement "All living things are composed of eukaryotic cells" is incorrect and is not a part of Cell Theory
Step-by-step explanation:
Eukaryotic organisms are not the only living things in existence. Micro organisms such as bacteria are referred to as prokaryotic. This classification is done on the basis of the presence or the absence of a nucleus. Eukaryotic organism are more evolved and contain a well defined nuclear structure.