Table of Contents
Why does cellular respiration produce different amounts of ATP?
While glucose catabolism always produces energy, the amount of energy (in terms of ATP equivalents) produced can vary, especially across different species. The number of hydrogen ions the electron transport chain complexes can pump through the membrane varies between species.
Why is the total count 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.
Why is the number of ATPs generated usually less than 36 ATPs?
In the last stage of respiration, some protons leak through the inner mitochondrial membrane back inside the matrix, so proton motive force which spins the headpiece of ATP synthase to produce ATP is decreased, hence less ATP produced.
Why does cellular respiration produce up to 38 ATP?
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).
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 yield of ATP 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.
How does cellular respiration differ from fermentation?
So how does fermentation differ from cellular respiration? Cellular respiration, like burning, results in the complete oxidation of glucose into CO2 and water. Fermentation, on the other hand, does not fully oxidize glucose. Instead, small, reduced organic molecules are produced as waste.
What accounts for the different number of ATP molecules that are formed through cellular respiration?
What accounts for the different number of ATP molecules that are formed through cellular respiration? The electron transport chain differs in composition between species, so different organisms will make different amounts of ATP using their electron transport chains.
What process produces 38 ATP?
The process human cells use to generate ATP is called cellular respiration. It results in the creation of 36 to 38 ATP per molecule of glucose. It consists of a series of stages, beginning in the cell cytoplasm and moving to the mitochondria, the “power plants” of eukaryotic cells.
How many ATP are produced during cellular respiration?
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 oxidised glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).
What is cellular respiration and how does it work?
Cellular respiration is the process by which organic compounds (preferably glucose) are broken apart, releasing energy that is used to produce ATP molecules. Cells need to have ATP because it’s the gasoline that powers all living things. ATP is a high energy nucleotide which acts as an instant source of energy within the cell.
How many ATP are produced during glycolysis and Krebs cycle?
Biology textbooks often state that 38 ATP molecules can be made per oxidised glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system). How much ATP is produced during one round of a Krebs cycle?
How many ATP can be made from one oxidized glucose molecule?
Biology textbook 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 trans port system How can I save money on my prescriptions?