1. A Simple Daniell Cell Complete the diagram below by writing in formulas for the composition of the electrodes and of the ions in the solutions. Place these formulas near the appropriate arrows leading into the solutions. Also indicate the electric charge which is produced by a (+) or (-) sign near the top of each electrode.

characterize the following reactions as endergonic or exergonic and positive or negative delta G?

5 Type of Enzymatic reaction it Assists 1.Pantothenic acid 2.Thiamin 3.Niacin 4.Riboflavin

Draw tructu f he ajor rganic roduct f he ollowing reaction. CH2 1. Hg(OAc)2, H20 2. NaBH4 CH3 • In cases where there is more than one answer, just draw one. •You do not have to consider stereochemistry. [ド

CH₂OH T C=O CH₂OPO²- DHAP Triose phosphate isomerase H HCOH CH₂OPO3²- G-3-P Under standard conditions, AG° = +7.53 kJ/mol. What is AG when the initial concentration of DHAP is 2 x 10-4 M and the initial concentration of G-3-P is 3 x 10-6 M? R = 8.314 x 10-3 kJ*mol-¹*K-1 T = 310 K

2. The electron transfer potential of NADH and FADH2, relative to O2, drives oxidative phosphorylation and ATP synthesis. Oxidation of NADH occurs by the following reaction (1) : (1) 0.5 02 + NADH + H* H20 + NAD* The reaction above can be expressed in terms of the following half reactions: (2) 0.5 O2 + 2 H* + 2 e > H20 (3) NAD+ + 2 H* + 2 e → NADH E. E, = -0.32 V = +0.82 V Calculate AE'" and AGO for the oxidation of NADH (Reaction 1). а. b. What is AG'º for the synthesis of ATP from ADP? c. Using your results from Parts (a) and (b), explain how the electron transfer potential of NADH drives ATP synthesis.

oxidation of methyl alcohol are quite toxic, death as they interfere with key reactions in the celis of cess that occurs in the reaction. All these definitions are summarized death as they interfere with key reactions in the cells of oxidation of methyl alcohol are quite toxic, e find that the particular definition of oxidation and reduction we use ess that occurs in the reaction All these definitions are summarized fon always involves a loss of electrons, but it may also be seen as an r the loss of hydrogen atoms. A reduction always involves a gain of o be seen as the loss of oxygen or the gain of hydrogen. 7.46 Identify each of the following as an oxidation or a reduction: a. O2(g) + 4 e → 20²-(ag) b. Ag(s) → Ag*(aq) + e Fe2*(aq) c. + e → Fe2+ d. 2Br (aq) → Br2(1) + 2 e 17 In each of the following, identify the reactant that is oxidized 7.47 and the reactant that is reduced:

The following graph represents the results of an experiment onta metabolic enzyme. What is the optimum pH of this enzyme? click here if need to download image 3 456789 10 pH O 5.5 O 9.5 O 3.0 O 6.5 rate

ATP synthase,the enzyme has 3 alpha-beta and 12 ‘c’ subunits. The mitochondrion maintains change in membrane potential=180 mV (negative inside), pHin = 8, pHout=7, [Pi] = 3 mM and ADP is present as well. How much energy is available for ATP synthesis under these conditions (in kJ/mol)?

1) A new enzyme was isolated from underneath Antarctica! It catalyzes the following reaction! Zn+2 OH CI HCI Based on what you know, what is the role of the Zn+2 in this enzyme reaction? To answer this, show what Zn+2