G has the most kinetic energy?? A:car traveling at 80 kph. B:tractor-trailer traveling at 80 kph. C:cheetah running at 80 kph . D: motorcycle traveling at 80 kph .

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.