Question

The site of EMP pathway in cell is
(A) Peroxisome
(B) Cytoplasm
(C) Matrix of mitochondria
(D) Inner membrane of mitochondria

Answer 1

Hint: EMP pathway is the most commonly used type of glycolysis. The full form of EMP pathway is Gustav Embden, Otto Meyerhof and J. Parnas pathway since they gave the scheme for glycolysis. It is the first process that takes place in the respiration.

Complete step by step answer:
Glycolysis takes place aerobically or anaerobically but it doesn’t involve molecular oxygen. It is the sequence of catalytic reactions that are irreversible in nature. In this process the complex molecules like glucose, fructose etc. break down into the simpler compounds like pyruvate, pyruvic acid and hydrogens with the certain amount of energy released. Hence it is known as glycolysis. It is a common pathway that occurs in both aerobic and anaerobic respiration. The energy released from the glycolysis process is in the form of ATP (Adenosine triphosphate) and NADH.

The pyruvate that is produced as the result of glycolysis enters into the citric acid cycle where it diffuses in the mitochondria. Glycolysis takes place in the cytosol of the cells of both prokaryotic and eukaryotic cells of the living organisms. Cytosol is the liquid component of the cytoplasm. Hence the site of the EMP pathway in the cell is cytoplasm.

Thus, the option (B) is correct.

Note: Glycolysis or EMP pathway takes place in two phases. They are preparatory phase and pay off phase. The preparatory phase deals with the first five of ten catalytic reactions. And the payoff phase deals with the last five reactions.