Biochemistry Ii Exam 1 Questions And Answers A+ Review Solution

Hexokinase/Glucokinase; PFK-1; pyruvate kinase {Ans: List the control steps of glycolysis:}converts citrate to isocitrate and in doing so sets up the molecule for the oxidative decarboxylation steps of the TCA cycle, which is the control point of the cycle {Ans: Why is the aconitase reaction so important to the TCA cycle?}couple to favored step; activated proteins(phosphorylation/dephosphorylation); concentration gradients {Ans: Provide three methods to get around unfavorable reactions in metabolism}Might be confused due to both occurring in mitochondria. Also, in process of succinate to fumerate via succinate dehydrogenase in the TCA cycle FADH2 is produced. That FADH2 is then transported to ETS and is reduced to FAD to produce 1.5 ATP. Therefore, FADH2 directly links the TCA cycle and the ETS together, but are not the same pathway {Ans: Explain why some people confuse the fact that the TCA cycle and the ETS are the same metabolic pathway.}AMP, ADP, fructose-6-phosphate, fructose-2,6-bisphosphate; ATP and citrate {Ans: Provide the allosteric activators and inactivators of the PFK-1 reaction(fructose-6-phosphate-->fructose-1,6-bisphosphate) in glycolysis: -Activators: -Inactivators:}Glucose +2NAD+ +2ADP +2Pi-->2 Pyruvate +2NADH +2ATP +2H2O +4H+; two extra protons come from conversion of glucose to glucose-6-phosphate as well as fructose-6-phosphate to fructose-1,6-bisphosphate. In each of