Refer to the information provided in Figure 28.7 below to answer the question(s) that follow. 
Figure 28.7
-Refer to Figure 28.7. The natural rate of unemployment occurs at
Definitions:
Pyruvate
A key intermediate compound in the cellular metabolic pathways, formed from the breakdown of glucose through glycolysis.
Lactate
A compound produced during anaerobic metabolism, commonly known as lactic acid when found in the body.
Preparatory Reaction
A phase in cellular respiration occurring in the mitochondria where pyruvate from glycolysis is converted into acetyl-CoA, preparing it for the citric acid cycle.
Oxygen
A chemical element with symbol O and atomic number 8, essential for respiration in many living organisms and for combustion.
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