All living things are made up of the basic fundamental unit called cells. Bacteria, trees and cats are alike as they all are organisms made of cells.
The cell is the basic unit or the most simple unit of life that is found and is essential for an organism to be alive. They are the structural and the building unit of the organism.
Bacteria, cats and trees all together cannot be prokaryotic as only bacteria is prokaryote while the tree and cat is the eukaryotic organism that has delimited nucleus and membrane.
Therefore, option C. are made up of cells is correct about bacteria, cats and trees.
Learn more about cells here:
https://brainly.com/question/1603812