Although liver glycogen stores are depleted during the secon…

Although liver glycogen stores are depleted during the second phase of fasting, hormonal signals function to maintain blood glucose content near 4.5 mM (~100 mg/100 mL). At this time, during the second of the three phases of fasting, the primary precursor for glucose is which of the following?

Insulin is released in response to elevated blood glucose an…

Insulin is released in response to elevated blood glucose and acts on multiple tissues to lower circulating glucose by increasing glucose oxidation and storage. One mechanism that contributes to these processes is insulin-stimulated glucose transport in which of the following two tissues?

Oxaloacetate concentration is the most important regulator o…

Oxaloacetate concentration is the most important regulator of the citric acid cycle. Acetyl CoA allosterically induces the activity of a key enzyme to promote an anapleurotic reaction and thus, maintain the balance between oxaloacetate and acetyl CoA concentrations. In the overall process of losing fat, fat cannot be oxidized in the absence of the substrate for this enzyme. Which of the following is the substrate for this key enzyme?