Table of Contents
When would a cell produce 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. Theoretically, 34 ATPs are produced in the ETS by the complete oxidation of a glucose molecule.
Can ATP be produced without oxygen?
Without oxygen, some human cells must use fermentation to produce ATP, and this process produces only two molecules of ATP per molecule of glucose.
Why is oxygen needed for most ATP production?
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.
What makes the most ATP?
The electron transport chain
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.
What produces the most ATP quizlet?
The reactions that generate the largest amounts of ATP during cellular respiration take place in the mitochondria.
Why is less ATP produced without oxygen?
Without oxygen, organisms can split glucose into just two molecules of pyruvate. This releases only enough energy to make two ATP molecules. This releases enough energy to produce up to 38 ATP molecules. Thus, aerobic respiration releases much more energy than anaerobic respiration.
How do some cells release energy without oxygen?
Fermentation. Some organisms are able to continually convert energy without the presence of oxygen. They undergo glycolysis, followed by the anaerobic process of fermentation to make ATP.
What is the most important role of oxygen in cellular respiration?
The role of oxygen in cellular respiration is to act as the end electron acceptor. After electrons are dropped off at the inner mitochondrial membrane during cellular respiration, they travel through the electron transport chain and eventually are accepted by oxygen to create water.
Why is oxygen so important in cellular respiration?
Oxygen serves as a final electron acceptor of the electron transport chain in cellular respiration assisting the movement of electrons down a chain, resulting in the production of adenosine triphosphate (ATP). Oxygen combines with electrons and hydrogen ions to produce water. Hence the importance.
What step in cellular respiration makes the most ATP?
Krebs cycle
The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breath out. This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle).
What step of cellular respiration makes the most ATP?
The Krebs cycle
What produces ATP in a cell?
Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.
When would a cell produce the most ATP Quizlet?
In respect to this, when would a cell produce the most ATP? Most of the ATP of a eukaryotic organism is made in the mitochondria during the last phase of cellular respiration that is called the electron transport chain (ETC). A mitochondrion is an organelle within a eukaryotic cell. Cellular respiration occurs within the mitochondria.
Where does most cellular respiration occur in a cell?
Most of the reactions of cellular respiration are carried out in the mitochondria. In respect to this, when would a cell produce the most ATP? Most of the ATP of a eukaryotic organism is made in the mitochondria during the last phase of cellular respiration that is called the electron transport chain (ETC).
How many ATP are made during glycolysis?
Glycolysis produces two ATP molecules, and the Krebs cycle produces two more. Electron transport begins with several molecules of NADH and FADH 2 from the Krebs cycle and transfers their energy into as many as 34 more ATP molecules. Secondly, where is the most ATP made during cellular respiration?
What is the role of oxygen in cellular respiration?
Oxygen is needed to help the process of turning glucose into ATP. The initial step releases just two molecules of ATP for each glucose. The later steps release much more ATP. Most of the reactions of cellular respiration are carried out in the mitochondria.
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