unit 4 test

Question 1

cell theories

Answer 1

1. all organisms are made up of ONE cell
2. these cells working individually or together in tissues or organs, perform all life functions.
3. all cells come from preexisting cells

Question 2

the exceptions

Answer 2

1. the first cell could not have come from a preexisting cell
2. . Viruses - which are not cells have hereditary material and can reproduce.
3. Organelles such as mitochondria and chloroplasts have genetic material
   and can reproduce.