Carbohydrate
Pyruvate is initially converted to which of the following in the gluconeogenesis?

Glycerol
Acetyl CoA
Phosphoenol pyruvate
Oxaloacetate

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Carbohydrate
When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

their enzymes lose the proper three-dimensional shape
there is insufficient molecular motion for substrates to interact
the activation energy for the reaction is raised
enzyme active sites become permanently bound to substrates

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Carbohydrate
Fructose diphosphate accumulation would

inhibit glycolysis and stimulate gluconeogenesis
inhibit glycolysis and gluconeogenesis
stimulate glycolysis and inhibit gluconeogenesis
stimulate glycolysis and gluconeogenesis

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