Question

Which feature(s) are common to glycolysis, gluconeogenesis, and the TCA cycle?

A. They all occur in the cytoplasm
B. They all oxidize organic molecules to generate energy for the cell.
C. They are all regulated by energy-sensing allosteric enzymes
D. All of the above are common to all three

Answer 1

The common feature of glycolysis, gluconeogenesis, and the TCA cycle is that they are regulated by energy-sensing allosteric enzymes.

Step-by-step explanation:

The feature that is common to glycolysis, gluconeogenesis, and the TCA cycle is that they are all regulated by energy-sensing allosteric enzymes. While glycolysis and the TCA cycle both involve the oxidation of organic molecules to generate energy, glycolysis occurs in the cytoplasm and the TCA cycle takes place in the mitochondrial matrix. Gluconeogenesis also takes place predominantly in the liver and to a lesser extent in the kidney and small intestine, not solely in the cytoplasm. Therefore, the correct answer is C: They are all regulated by energy-sensing allosteric enzymes.