Please help, thank you
a) Approximately how many ATP or GTP equivalents will be produced from energy molecules produced during one turn of the citric acid cycle? Assume that 1 NADH produces 2.5 ATPs and 1 FADH2 produces 1.5 ATPs at the end of the electron transport chain and the ATP synthase steps. Show your calculations.
b) What is the purpose of reactions 5 through 8?