Description ANSWER FOLLOWING QUESTIONS MULTIPLE CHOICE 1) Which of the following is not a true statement regarding metabolic pathways? a) Metabolic pathways can be regulated genetically by altering expression levels of enzymes in the pathway. b) Metabolic pathways can be regulated allosterically by small molecule products of the pathway. c)Metabolic pathways can be regulated covalently by transient modification or complete proteolysis of enzymes in the pathway. d)Biosynthetic pathways are identical to breakdown pathways but run in reverse. 2)Mg2+ is requirement of all protein kinase enzymes. Which statement below best describes the role played by Mg2+ in a typical kinase enzyme-catalyzed reaction? a)Mg2+ is a metal ion co-factor that is required for the enzyme-catalyzed reaction to occur. b)Mg2+ is a co-substrate co-factor that is required for the enzyme-catalyzed reaction to occur. c)Mg2+ is the substrate that is converted into product during the enzyme-catalyzed reaction d) Mg2+ is a vitamin co-factor that is required for the enzyme-catalyzed reaction to occur. e)Mg2+ is a prosthetic group co-factor that is required for the enzyme-catalyzed reaction to occur. 3) picture attached (#4 in the pic) 4)Given the the standard reduction potentials for cystine disulfide and NAD+ on Table 1 below, calculate the standard state reduction potential for the chemical reaction that follows. Give your answer in Volts to three decimals (thousandths) and do not include units. Table 1. Standard Reduction Potentials of Some Biochemically Important Half-Reactions Half-Reaction ??°’ (V) NAD+ + H+ + 2e- ? NADH -0.315 Cystine disulfide + 2H+ + 2e-? 2 Cysteine -0.340 Cystine disulfide + NADH + H+ ? 2 Cysteine + NAD+ 5)Consider the chemical reaction: ATP + AMP ? 2 ADP Using data in the Table 1 below,