Essay question: Explain how 38 ATP are formed in process of cellular respiration. EXPLAIN IN DETAILS.

Essay question:

Explain how 38 ATP are formed in process of cellular respiration. EXPLAIN IN DETAILS.

Expert Solution

Cellular respiration

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate ( ATP ) , and then release waste products .

Two types

1.aerobic respiration

2.anaerobic respiration

Mechanism of respiration

Both aerobic and anaerobic respiration start with glycolysis . In aerobic respiration , glycolysis is followed by Citric acid cycle and then electron transport system , both occuring in the mitochondria .

In anaerobic respiration , glycolysis is followed by formation of ethyl alcohol or organic acid , that occurs in the cytoplasm .

Glycolysis

In glycolysis two molecules of ATP are consumed during double phosphorylation of glucose to fructose 1 , 6 biphosphate . Two molecules of NADPH2 are formed at the time of oxidation of glyceraldehyde 3 - phosphate to 1 , 3 biphosphoglycerate . Each NADH is equivalent to 3ATP , so that net gain in glycolysis is 8 ATP .

Link reaction

Citric acid cycle

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