BIOCHEM 2EE3 Lecture Notes - Dna Microarray, Electromotive Force, Reverse Transcriptase

• School: McMaster University
• Department: Biochemistry
• Course: BIOCHEM 2EE3
• Professor: Boris Zhorov

Document Summary

Electric motors convert electron ow into mechanical motion. A battery has two electrodes with different af nity to electrons. Electrons move from the low-af nity electrode to the high-af nity electrode via a macroscopic circuit. A chemical energy inside the battery moves electrons from high to low af nity electrodes. In a muscle, or a biological circuit, the sources of electrons are reduced from compounds in food. They have atoms with low electron af nity which can easily donate electrons (oxidize - reducing agents). As the reduced compounds are enzymatically oxidized, electrons are released. The ow of electrons to high af nity (o2) results in an electromotive force that can be transduced into biological work. Ethane: charges of electrons counterbalance charges at nuclei so each atom has a partial charge ~0. Electrons shift from oxidized compounds from carbon to oxygen. Oxidized carbon bears a positive partial charge, while oxygens a negative partial charge.