Question

Where does pyruvate oxidation occur in eukaryotic cells?

A. In the cytoplasm
B. In the nucleus
C. In the Golgi body
D. In the mitochondria

Answer 1

Pyruvate oxidation occurs in the mitochondria of eukaryotic cells, where the Krebs cycle and oxidative phosphorylation take place.

Step-by-step explanation:

Pyruvate oxidation takes place in the mitochondria of eukaryotic cells. During this process, pyruvate molecules produced at the end of glycolysis are transported into the mitochondria. The mitochondria host the Krebs cycle and oxidative phosphorylation, generating ATP for the cell. This function, coupled with the presence of the electron transport chain, earns the mitochondria the title of the cell's 'powerhouse.'

In summary, the correct answer to the question is: D. In the mitochondria.