3. without a salt bridge charge buildup will cause the cell reaction to stop. (1)Reduction occurs at the cathode. (2)A spontaneous reaction generates an electrical current in a voltaic cell. (3) without a salt bridge charge buildup will cause the cell reaction to stop.
Peptide Bonds. The joining of amino acids in the process of making biochemical molecules like proteins is done by bonds which are referred to as peptide bonds. This may be illustrated with the two simplest amino acids, glycine and alanine.
In addition to the covalent bonds that connect the atoms of a single amino acid and the covalent peptide bond that links amino acids in a protein chain, covalent bonds between cysteine side chains can be important determinants of protein structure.