NAD + is a coenzyme that plays a crucial role in cellular metabolism. It consists of an adenine nucleotide joined to a nicotinamide nucleotide. NAD + acts as an electron carrier in redox reactions, ...

How can just four nitrogenous bases--adenine, cytosine ... Furthermore, how could a three-nucleotide code be "read" by the protein-forming machinery of the ribosome? Was it an overlapping or ...