What is the maximum number of ATP formed from one molecule of glucose by aerobic metabolism?

What is the maximum number of ATP formed from one molecule of glucose by aerobic metabolism?

38
The theoretical maximum yield of ATP for the oxidation of one molecule of glucose during aerobic respiration is 38. In terms of substrate-level phosphorylation, oxidative phosphorylation, and the component pathways involved, briefly explain how this number is obtained.

How much ATP are produced by aerobic respiration of glucose?

In aerobic conditions, the process converts one molecule of glucose into two molecules of pyruvate (pyruvic acid), generating energy in the form of two net molecules of ATP. Four molecules of ATP per glucose are actually produced, however, two are consumed as part of the preparatory phase.

Why does aerobic respiration produce more ATP a maximum of 38 ATP molecules than anaerobic respiration only 2 ATP molecules per molecule of glucose )?

Without oxygen, organisms can split glucose into just two molecules of pyruvate. With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules. Thus, aerobic respiration releases much more energy than anaerobic respiration.

Why is the actual ATP yield of aerobic respiration often less than the maximum possible yield of 38 ATP?

Why is the actual ATP yield of aerobic respiration often less than the maximum possible yield of 38 ATP? Glycolysis cannot occur in an anaerobic environment. Nitrogen is fixed to ammonia by cyanobacteria and other microbes.

Why is there a net yield of two not four ATP molecules in glycolysis?

Although four ATP molecules are produced in the second half, the net gain of glycolysis is only two ATP because two ATP molecules are used in the first half of glycolysis. Red blood cells require glycolysis as their sole source of ATP in order to survive, because they do not have mitochondria.

How many ATP molecules can be produced for each molecule of glucose?

In a eukaryotic cell, the process of cellular respiration can metabolize one molecule of glucose into 30 to 32 ATP. The process of glycolysis only produces two ATP, while all the rest are produced during the electron transport chain.

How many ATP are produced from one glucose molecule during fermentation quizlet?

Cellular respiration results in 32 ATP made from a molecule of glucose. Fermentation makes no ATP itself, but allows glycolysis to continue, which has a net gain of two ATP. The Krebs cycle makes one ATP each time it cycles, which is twice for each original molecule of glucose, so it makes two ATPs.

How do the quantities of ATP formed during aerobic and anaerobic respiration compare?

Aerobic respiration is far more energy-efficient than anaerobic respiration. Aerobic processes produce up to 38 ATP per glucose. Anaerobic processes yield only 2 ATP per glucose.

Which process yields more ATP fermentation or anaerobic respiration?

Anaerobic respiration process yields more ATP because the 2 ATP produced by substrate-level phosphorylation is the total energy yield of fermentation. 7.6 – Describe how the catabolic pathways of glycolysis and the critic acid cycle intersect with anabolic pathways in the metabolism.

Can the actual ATP yield be less than the theoretical yield?

The actual yield of ATP is less than the theoretical yield because some protons leak across the mitochondrial membrane, hence, less gradient is generated. ATP is also utilised to transport pyruvate to mitochondria.

Why is ATP yield higher in aerobic respiration?

Aerobic respiration produces more ATP than anaerobic respiration due to the complete oxidation of glucose to CO2 and water. O2 acts as the terminal electron acceptor in the electron transport chain and gets reduced to water. Most of the ATPs are produced by oxidative phosphorylation in the electron transport chain.

What is the net yield of ATP molecules per glucose molecule undergoing glycolysis?

two ATP molecules
Glycolysis is present in nearly all living organisms. Glucose is the source of almost all energy used by cells. Overall, glycolysis produces two pyruvate molecules, a net gain of two ATP molecules, and two NADH molecules.

How many ATP are produced from glucose in fermentation?

The ATP generated in this process is made by substrate-level phosphorylation, which does not require oxygen. Fermentation is less efficient at using the energy from glucose: only 2 ATP are produced per glucose, compared to the 38 ATP per glucose nominally produced by aerobic respiration.

What is the net ATP yield during glycolysis?

Glycolysis: The net ATP yield is 2 ATP. And, since NADH+H shuttles its electrons and protons to FAD, reducing FAD to FADH2, the net yield is 3 ATP in the ETC. Conversion of pyruvate to ACOA: We do not produce any ATP in this stage. However, the 2 molecules of NADH+H+ will yied 5 ATP in the ETC.

How many ATP is produced in the conversion of pyruvate to ACOA?

Conversion of pyruvate to ACOA: We do not produce any ATP in this stage. However, the 2 molecules of NADH+H+ will yied 5 ATP in the ETC. TCA cycle: When calculating the total ATP in the TCA cycle, remember that there are TWO ACoA molecules. So, ATP is made one place in the TCA and with 2 turns of the cycle the ATP yield is 2.

How many molecules of ATP are produced during aerobic oxidation of glucose?

The complete aerobic oxidation of glucose is coupled to the synthesis of as many as 36 molecules of ATP: Glycolysis, the initial stage of glucose metabolism, takes place in the cytosol and does not involve molecular O. It produces a small amount of ATP and the three-carbon compound pyruvate.