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ATP, NADH and FADH2

Explanation: In citric acid cycle, Acetyl CoA combines with oxaloacete and in a series of enzyme catalyzed reactions generate one molecule of ATP (in form of GTP), one molecule of FADH2 and three molecules of NADH. FADH2 and NADH are channeled into the electron transport chain where they are used to generate more ATP.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.