Question

where does the krebs cycle take place?
cytoplasm
cytosol
mitochondrial cristae
mitochondrial matrix

Explanation:

The Krebs cycle, also known as the citric - acid cycle, occurs in the mitochondrial matrix of eukaryotic cells. It is a key part of cellular respiration. The mitochondrial matrix provides the necessary enzymes and environment for the reactions of the Krebs cycle to take place.

Answer:

Mitochondrial matrix