Choose the INCORRECT completion of the following sentence: "In the electrolysis of water... O ...a direct current must be used." ...oxygen is evolved at the cathode." ...electrical energy must be supplied continuously because it is an endothermic reaction." ...the volume of hydrogen produced is twice the volume of oxygen produced." ....one mole of H₂(g) is produced for each two moles of electrons."

4: Draw structures from notations or notations from structures, for the following dipeptides. Look up in book for the structures of various amino acids and their names (and notations). (EOCQ 60) Hints for drawing a dipeptide from the specified amino acids. From the given symbols (Ser, Thr, etc), draw the structures for the amino acids in the specified order example, for Ser-Thr, draw Serine first and then Threonine). Then remove the OH from the first amin and one H (from the N atom) on the second amino acid. Then join the remaining fragments; that give the dipeptide formed. In these reactions, H2O is formed as a side product; but it is implied, and you have to show it in your answers. The following equation illustrates that. Here, R and R' are symbolic. In an actual question, you must the actual structures for the amino acids (Table 16.3 in the book). O H || | Н.N— CH— С-N-CH—С-ОН H,N-CH-C–OH + H,N-CH-Ċ–OH R' R. R' (H2O is a sid no need t Amino acid 2 dipeptide Amino acid 1 а. Cys-Ser…

Can you please draw me two versions of the dipeptide tyr-phe that represent the two resonance forms of the peptide bond??

Draw the structure of the dipeptide Lys-Pro that is predominant at pH 8. Include all of the atoms and appropriate charges. Do not use the short-hand line diagrams.