The FTIR spectroscopy of charge transfer complexes of hormones, enzymes, enniatin B and beuvericin are studied here. The FTIR spectra of CTCs of hormones namely insulin, thyrotropin-releasing hormone, vasopressin and glucagon with organic acceptors is the subject of present study. It is found that these hormones are small band gap semiconductors except glucagon. The CTCs of these hormones with standard organic acceptors such as TCNQ, TCNE, DDQ, chloranil and iodine or KI-I2 are semiconductors having two band transports. Some of them are Peierls semiconductors while others have non-universal Hubbard gaps. Some of them show hopping conduction in amorphous conductors. Intrinsic electronic conduction with very small band gap of pure hormones is because of parallel stacking of molecules in nano- crystalline materials. Solid state FTIR spectroscopy of enniatin B, beuvericin and some enzymes such as hexokinase, catalase, cytochrom c oxides and pepsin and their CTCs has been carried out in the present study. It is found that enzymes catalase, pepsin and hexokinase are semi-metals. Also their CTCs like catalase-TCNQ, catalase-DDQ, catalase-KI-I2 and cytochrome c oxidase-TCNQ also semimetals