Of the following,
a receptor protein in a membrane that recognizes a chemical signal is most similar to a particular metabolic pathway operating within a specific organelle.
an enzyme with an optimum ph and temperature for activity.
rna specifying the amino acids in a polypeptide.
the active site of an allosteric enzyme in the cytoplasm that binds to a specific substrate. genes making up a chromosome.

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.