DNA is fundamental to the biology of all life on Earth, but how many of us actually know what it is or what it's made of?

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, ...

Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine ... is learning the nucleotide sequences of the DNA segments ...