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The high-energy electron carrier that produces fewer ATPs than NADH is FADH2. This is because FADH2 donates its electrons to the electron transport chain at complex II, while NADH donates its electrons at complex I. As a result, fewer protons are pumped across the mitochondrial membrane by FADH2, leading to a lower proton gradient and ultimately fewer ATP molecules generated through oxidative phosphorylation. Specifically, FADH2 typically results in the production of about 1.5 ATPs per molecule, compared to the 2.5 ATPs produced by NADH.
What else can I help you with?
What happens to electrons in the electron chain?
Oxygen (O2) is the electron acceptor in the Electron Transport Chain. "The electrons are passed to O2, the final electron acceptor of the electron transport system. This oxygen, now negatively charged because it has acquired additional electrons, combines with H+ ions, which are positively charged because they donated electrons at the beginning of the electron transport system, to form H2O." (Sherwood 36) References: Sherwood, Lauralee. Human Physiology: from Cells to Systems. 7th ed. Australia: Brooks/Cole, Cengage Learning, 2010. Print.
How can you justify the disappearance of oxygen as a measure of electron transport?
In the electron transport chain Oxygen is the final electron acceptor. Also the Oxygen accepts 2 Hydrogen ions, making water in the process. The dissapearance of Oxygen shows that the electron transport chain is working and that Oxygen is doing its job.
How are NADH and FADH2 related?
Think of it like this: Every time the electron is handed to another cytochrome, it pumps H+ across a membrane to create a gradient. NADH sticks the electron in higher up the chain than FADH2 does so the NADH electron pumps more protons since it is passed between more cytochromes than the FADH2 electrons. Since every proton pumped across is an ADP-->ATP reaction, the more protons an electron can pump, the more energy you get from that electron. FADH2 is around because it has roles in other areas like synthesis, so by being a little more multifunctional than NADH it sacrifices some in the electron transport role. -Jelanen
This high energy electron carrier produces fewer ATP's than nadh as its electrons pass through the e.t.c because it enters farther down the chain?
The high-energy electron carrier you're referring to is FADH2. Unlike NADH, which donates its electrons at Complex I of the electron transport chain (ETC), FADH2 donates its electrons at Complex II. This results in fewer protons being pumped across the inner mitochondrial membrane, ultimately producing less ATP, typically around 1.5 ATP per FADH2 compared to 2.5 ATP per NADH during oxidative phosphorylation.
Why is oxygen needed for oxidative phosphorylation?
Oxygen is one of the most electronegative elements in the biological world. This electronegativity is needed on the end of the electron transport chain. Electrons are passed from one complex or cytochrome to the next, and each successive molecule to be reduced needs to have a greater attraction for electrons than the last. So the end molecule, oxygen, needs to be electronegative enough to pull those electrons away, split and bond with two hydrogens to form water.
Why is oxygen the final electron acceptor in the electron transport chain?
Oxygen is the final electron acceptor in the electron transport chain because it has a high electronegativity, which allows it to efficiently pull electrons towards itself, facilitating the production of ATP in the process of cellular respiration.
What high energy electron carrier produces fewer atp's than nadh as its electrons pass through the electron transport chain?
FADH2 is the high energy electron carrier that produces fewer ATPs than NADH as its electrons pass through the electron transport chain. This is because FADH2 enters the electron transport chain at a later stage, leading to fewer ATP molecules being generated during oxidative phosphorylation.
Why do NADH and FADH2 donate electrons to different electron transport chain complexes?
NADH and FADH2 donate electrons to different complexes in the electron transport chain because they have different energy levels and transfer electrons at different points in the chain, allowing for efficient energy production through the generation of a proton gradient.
Why is oxygen needed for the final step in cellular respiration?
Oxygen is the final electron acceptor. Oxygen, with it's great electronegativity, pulls electrons through the electron transport chain where these electrons provide the motive force to pump protons into the outer lumen of the mitochondria. When these protons fall down their concentration gradient oxygen is there to pick then up with the electrons and form water.
What does NADH and FADH2 power?
NADH and FADH2 are electron carriers that power the electron transport chain in cellular respiration. This process generates ATP, the cell's main energy currency, by transferring electrons from NADH and FADH2 to molecular oxygen.
The final electron acceptor of aerobic respiration is?
Oxygen, because it is highly electronegative.
Why is oxygen needed to produce ATP on the cristae of mitochondrion?
Oxygen is needed to produce ATP on the cristae of the mitochondrion because it serves as the final electron acceptor in the electron transport chain. During cellular respiration, electrons are passed along the electron transport chain, generating a proton gradient across the inner mitochondrial membrane. Oxygen then combines with these electrons and protons to form water, allowing the electron transport chain to continue functioning and ultimately producing ATP through oxidative phosphorylation. Without oxygen, the electron transport chain would be unable to function properly, leading to a decrease in ATP production.
What happens to electrons in the electron chain?
Oxygen (O2) is the electron acceptor in the Electron Transport Chain. "The electrons are passed to O2, the final electron acceptor of the electron transport system. This oxygen, now negatively charged because it has acquired additional electrons, combines with H+ ions, which are positively charged because they donated electrons at the beginning of the electron transport system, to form H2O." (Sherwood 36) References: Sherwood, Lauralee. Human Physiology: from Cells to Systems. 7th ed. Australia: Brooks/Cole, Cengage Learning, 2010. Print.
How can you justify the disappearance of oxygen as a measure of electron transport?
In the electron transport chain Oxygen is the final electron acceptor. Also the Oxygen accepts 2 Hydrogen ions, making water in the process. The dissapearance of Oxygen shows that the electron transport chain is working and that Oxygen is doing its job.
Why is the final process of aerobic respiration called the electron transport chain?
Oxidation in chemistry is when an electron is stripped from an atom or molecule. In this case, an electron is stripped from the phosphate group in ATP so it can be used for energy, hence oxidative phosphorylation. The electron then moves through several processes that generate energy the cell can use. That's why it is most commonly referred to as the electron transport chain.
Is the electron transport chain a anabolic or catabolic reaction?
The electron transport chain is a catabolic process that occurs in the mitochondria. It involves the transfer of electrons from NADH and FADH2 to oxygen, generating ATP through oxidative phosphorylation.
How are NADH and FADH2 related?
Think of it like this: Every time the electron is handed to another cytochrome, it pumps H+ across a membrane to create a gradient. NADH sticks the electron in higher up the chain than FADH2 does so the NADH electron pumps more protons since it is passed between more cytochromes than the FADH2 electrons. Since every proton pumped across is an ADP-->ATP reaction, the more protons an electron can pump, the more energy you get from that electron. FADH2 is around because it has roles in other areas like synthesis, so by being a little more multifunctional than NADH it sacrifices some in the electron transport role. -Jelanen
