How are bacteria, a rose, and an elephant alike?

they are all made of eukaryotic cells.

they are all made of prokaryotic cells.

they are all organisms made of cells.

they all reproduce in the same way.

For the answer to the question above,
they are all made up of eukaryotic cells. It is an organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins (histones) into chromosomes. The cells of eukaryotes also contain an endoplasmic reticulum and numerous specialized organelles not present in prokaryotes, especially mitochondria, Golgi bodies, and lysosomes.

Covalent bond is the correct answer