According to cell theory, which are made of cells? check all that apply.

kitten
bacteria
cactus
mushroom
rock

Kitten, bacteria, cactus and mushroom.

Explanation:

According to the cell theory, all living things are made up of cells and all the new cells are formed from pre-existing cells.

The cell is the smallest structural and functional unit of life and hence, all that is living will be made up of cells. 

From the given list kitten, bacteria, cactus, and mushroom are all living beings and thus are made up of cell however the rock is a nonliving thing and thus is not made of cells.

your answer should be c) enjoy!