How is 38 ATP possible?

Most of the ATP produced by aerobic cellular respiration is made by oxidative phosphorylation. Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

How much energy is produced by each ATP molecule?

The hydrolysis of one ATP molecule releases 7.3 kcal/mol of energy (∆G = −7.3 kcal/mol of energy).

What provides the largest amount of ATP?

Explanation: The electron transport chain generates the most ATP out of all three major phases of cellular respiration. Glycolysis produces a net of 2 ATP per molecule of glucose.

Why is the total count about 36 or 38 ATP molecules rather than a specific number?

33. Why is the total count about 36 or 38 ATP molecules rather than a specific number? Since phosphorylation and the redox reactions aren’t directly coupled to each other, the ratio of the number of NADH molecules to the number of ATP molecules is not a whole number.

How cellular respiration transfers the energy from one molecule of glucose to 38 molecules of ATP?

Energy is stored in the bonds between the phosphate groups (PO4-) of the ATP molecule. When ATP is broken down into ADP (adenosine diphosphate) and inorganic phosphate, energy is released. During cellular respiration, about 36 to 38 ATP molecules are produced for every glucose molecule.

Why is ATP considered a high energy molecule?

ATP is an excellent energy storage molecule to use as “currency” due to the phosphate groups that link through phosphodiester bonds. These bonds are high energy because of the associated electronegative charges exerting a repelling force between the phosphate groups.

How many joules are in an ATP molecule?

Hydrolysis of one gram mole of ATP releases about 470 kJ of useful energy; hydrolysis of a single ATP molecule, about 10−19 J.”

Which process generates the greatest amount of energy?

The process of aerobic respiration produces a massive amount of energy. This process tends to produce approximately 38 ATP molecules. a. fermentation: — This is an incorrect answer as the process of fermentation yields a maximum amount of 2 ATP molecules.

What produces the least amount of ATP?

Glycolysis (see “Glycolysis” concept) is an anaerobic process – it does not need oxygen to proceed. This process produces a minimal amount of ATP. The Krebs cycle and electron transport do need oxygen to proceed, and in the presence of oxygen, these process produce much more ATP than glycolysis alone.