Basic purpose of this lecture is to present on Protein Synthesis. Protein Synthesis is DNA unwinds, mRNA copy is made of one of the DNA strands, mRNA copy moves out of nucleus into cytoplasm and tRNA molecules are activated as their complementary amino acids are attached to them. mRNA copy attaches to the small subunit of the ribosomes in cytoplasm. A tRNA bonds complementarily with the mRNA via its anticodon. A second tRNA bonds with the next three bases of the mRNA, the amino acid joins onto the amino acid of the first tRNA via a peptide bond.