Which part of the DNA molecule contains the genetic information used to make proteins?

The part of the DNA molecule that carries the genetic information is called the gene. It is the basic unit of heredity.

The nucleotide base sequence encodes information. The bases of A,T and C,G code for the order of an Amino Acid which are the proteins. These four bases form millions of combinations that code for all the genetic material in a cell. These structures form the rungs of the ladder.

DNA contains two different types of genes, known as introns and extrons. Extrons code for protein synthesis, and introns, as far as we can tell, play a role in determining when specific extrons will be expressed (which is to say, when they will actually be used for protein synthesis) and when they will remain dormant.

Almost, the 4 types of nucleotides are "read" in groups of 3 to make 1 codon. Other than a start and stop codon, the rest are translated into amino acids. Those acids become proteins which are then made into genes, or cells of some kind.