How much ATP does electron transport produce? Electron transport chain
This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle). The electron transport chain takes place in the mitochondria. This stage converts the NADH into ATP.
How 36 ATP is produced? As a result, between 1 and 2 ATP are generated from these NADH. In eukaryotic cells, the theoretical maximum yield of ATP generated per glucose is 36 to 38, depending on how the 2 NADH generated in the cytoplasm during glycolysis enter the mitochondria and whether the resulting yield is 2 or 3 ATP per NADH.
How does electron transport chain produce ATP? In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.
Is it 36 or 38 ATP? According to some newer sources, the ATP yield during aerobic respiration is not 36–38, but only about 30–32 ATP molecules / 1 molecule of glucose, because: ATP : NADH+H+ and ATP : FADH2 ratios during the oxidative phosphorylation appear to be not 3 and 2, but 2.5 and 1.5 respectively.
How much ATP does electron transport produce? – Related Questions
Why is the total count about 36 or 38?
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.
Why does the electron transport chain produce the most ATP?
Oxidative phosphorylation is a highly efficient method of producing large amounts of ATP, the basic unit of energy for metabolic processes. During this process electrons are exchanged between molecules, which creates a chemical gradient that allows for the production of ATP.
How does the electron transport chain produce 34 ATP?
In this step of cellular respiration, electron carriers NADH and FADH2 drop off the electrons they’ve carried from the citric acid cycle. This drop-off allows a large number of ATP molecules to form. In fact, 34 ATP are produced. The ETC is directly aerobic because it uses oxygen and converts it into water.
Does the electron transport chain require oxygen?
Explanation: Oxygen is the final electron acceptor in the electron transport chain, which allows for oxidative phosphorylation. Without oxygen, the electrons will be backed up, eventually causing the electron transport chain to halt.
How many ATP is equal to NADH?
In cytoplasm, one molecule of NADH is equivalent to 2 ATP. Inside the mitochondria, one molecule of NADH is equivalent to 3 ATP.
Why the number of ATP is not known exactly?
The total number of ATP is not known exactly and is due to variance in the degree of coupling between the flow of protons through the ATPase and electron transport. ATP – Adenosine triphosphate, the energy currency of the cell are organic compounds composed of the phosphate groups, adenine and sugar ribose.
Does aerobic respiration produce 36 or 38 ATP?
ATP yield during aerobic respiration is not 36–38, but only about 30–32 ATP molecules / 1 molecule of glucose .
Which process is more efficient at producing ATP?
Summary. 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 step in cellular respiration produces the most ATP?
The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS) present in mitochondria. The formation of ATP occurs by oxidative phosphorylation.
Why does NADH produce more ATP?
It was estimated that for every 3 protons that passed through the ATP synthase, one molecule of ATP is produced. So, the amount of ATP produced by NADH or FADH2 depends on the number of protons each helps to be pumped during oxidative phosphorylation.
What is the main purpose of the electron transport chain?
What is the primary function of the electron transport chain? Explanation: The electron transport chain is primarily used to send protons across the membrane into the intermembrane space.
How does the electron transport chain produce 32 ATP?
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. Thus, electrons are picked up on the inside of mitochondria by either NAD+ or FAD+.
How many ATP NADH and FADH2 are produced in electron transport chain?
2.5 ATP/NADH and 1.5 ATP/FADH2 are produced in the electron transport chain.
When glucose is used as energy source the largest amount of ATP produced in?
When glucose is used as an energy source, the largest amount of ATP is generated by the electron transport chain portion of the entire respiratory process. Glycolysis generates approximately 2 net ATP.
What does oxygen get reduced to at the end of the electron transport chain?
Figure 1. The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
Is the electron transport chain the same as oxidative phosphorylation?
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Together, the electron transport chain and chemiosmosis make up oxidative phosphorylation.
Why is o2 the final electron acceptor?
Oxygen acts as a final electron acceptor that helps move electrons down a chain that results in adenosine triphosphate production. To summarize this process, the food we eat is metabolized in a way to release electrons and hydrogen ions used by the mitochondria to produce adenosine triphosphate.
Does ATP have more energy than NADH?
NADH is another high energy molecule. (NAD has low energy, NADH has higher energy). NADH has many fewer uses in the cell than ATP. It is normally converted into ATP in the mitochondrial electron transport chain if oxygen is present.
How much ATP does 1 glucose molecule create?
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 a 6 carbon fatty acid?
The six carbon FA yields a total of 44 ATP equivalents, while oxidation of one glucose yields 38 (or 36) equivalents.
How much ATP does a 16 carbon fatty acid produce?
Complete oxidation of one palmitate molecule (fatty acid containing 16 carbons) generates 129 ATP molecules.