Table of Contents
Why does fadh produce less ATP?
FADH2 Yield Less ATP Than NADH because complex II of the electron transport chain does not pump out protons during oxidative phosphorylation.
How many ATP are produced from 1 fadh?
2.5 ATP/NADH and 1.5 ATP/FADH2 are produced in the electron transport chain.
Why does FADH2 provide energy for 1.5 ATP molecules in the ETC whereas NADH provides energy for 2.5 ATP molecules?
Why does FADH2 provide energy to synthesize 1.5 ATP via electron transport, whereas NADH provides energy to synthesize 2.5 ATP? NADH is a more reduced form of coenzyme than FADH2. The electrons from NADH enter electron transport at a higher energy level than the electrons from FADH2.
Why does FADH2 result in fewer ATP than NADH H?
FADH2 produces fewer ATP molecules than NADH when it passes its electrons down the electron transport chain because FADH2 only activates 2 proton pumps, while NADH activates 3 proton pumps.
How is FADH2 formed?
FADH2 and NADH are created from FAD and NAD+ through reduction-oxidation reactions in the Krebs cycle during respiration as seen below: This cycle gives off small amounts of energy in the form of adenosine triphosphate, or ATP, and produces these compounds, FADH2 and NADH. The Krebs cycle is like a wheel.
How many FADH2 are produced in cellular respiration?
2 FADH
Efficiency of ATP production
| Step | coenzyme yield | ATP yield |
|---|---|---|
| Krebs cycle | 2 | |
| 6 NADH | 15 | |
| 2 FADH2 | 3 | |
| Total yield | 30 or 32 ATP |
Why does NADH produce more ATP than fadh?
The reason why more ATP are produced from NADH than from FADH2 is that FAD takes less energy to reduce than does NAD+; so when the opposite (oxidation) occurs, more energy is released from NADH than from FADH2.
How many ATP can NADH and FADH2 yield?
One molecule of NADH can yield three ATP and one molecule of FADH2 can yield two ATP. These numbers are not exact because an approximate number of H+ ions is required to move across the inner mitochondrial membrane for the synthesis of each molecule of ATP.
Why FADH2 produces less ATP than NADH?
Correct answer: FADH2 produces less ATP then NADH because the electrons for FADH2 are dropped off at the second protein of the electron transport chain. As a result, the electrons from FADH2 do not pump as much electrons across the membrane as NADH.
How NADH produce three ATP while fadh produces two molecules of ATP?
The oxidation of one molecule of NADH thus leads to the synthesis of three molecules of ATP, whereas the oxidation of FADH2, which enters the electron transport chain at complex II, yields only two ATP molecules.