Identical twins look alike because their bodies contain identical

Dna-Deoxyribonucleic Acid

Explanation:

answer; ///(b) it is composed of four protein chains and four heme groups;

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.