One of the most significant steps in the evolution of true cells from macromolecular assemblages was the evolution of:

A) electronegativity.
B) covalent bonding.
C) hydrogen bonding.
D) valence electrons.
E) molecular reproduction.

Molecular Reproduction

The process by which molecules create copies of themselves, fundamental to biological replication and cell division.

Electronegativity

A measure of an atom’s attraction for electrons.

Covalent Bonding

A chemical bond that involves the sharing of electron pairs between atoms, stabilizing them and making the atoms bound together in a molecule.