Peter Dennis Mitchell was a British biochemist, who was awarded the 1978 Nobel prize for chemistry for his discovery of the 'chemiosmotic mechanism' of ATP synthesis.
Pentose phosphate pathway was discovered by Warburg and Dickens. It is a pathway of hexose oxidation in which glucose-6-phosphate undergoes two successive oxidations by NADP, the final one being oxidative decarboxylation to form a pentose phosphate.
EMP pathway is known as 'Embden-Meyerhof-Parnas pathway'. It is also called as glycolysis. It converts glucose to pyruvate.
Kostychev was first Russian scientist to explain anaerobic respiration. He applied his knowledge of microbiology to the study of the decomposition of organic matter in the soil. Thus, the correct answer is option C.