Which feature do prokaryotic and eukaryotic cells share?

Features shared by both Prokaryotic and Eukaryotic as follows:

i) Flagella

ii) Plasma membrane

iii) Cytoplasm

iv) Cell division

v) Chromosomes

vi) Ribosomes

Both prokaryotic and eukaryotic cells have structures in common.  All cells have a plasma membrane, ribosomes, cytoplasm, and DNA

Explanation:

so prokaryotic and eukaryotic have in common is DNA, cytoplasm, ribosomes, and plasma membrane and structures

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.