nucleotides

What is Nucleotides? - Nucleotides are the building blocks that are necessary for making new DNA and RNA. The rungs of the DNA ladder are made of a combination of two different nucleotides. The nucleotides are molecules, called guanosine and cytosine, that pair up together, or adenosine and thymidine , which also pair up together. Adenosine and guanosine are called purines. Cytosine, thymidine and uradine are called pyrimidines. ] So, what exactly makes nucleotides so important? - For a bird, human, or other animal to continue to live, grow and develop, it must create new cells all the time, to replace dying cells. Millions of cells must be made every minute, just to maintain the body as it. These cells all must use nucleotides to make new cells, relying on DNA and RNA to correctly multiply cells. Nucleotides are used for creating cells, replacing cells, including developing immune cells, developing sperm cells and supporting the female reproductive tract.