They are both eukaryotic cells, They both contain organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes, and also contain similar membranes, cytosol, and cytoskeletal elements
Having on valence electron indicates that these elements are on the same column/group of the periodic table. Both these elements will bond with a -1 charge.
