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What happens with FADH2 donates its electrons to the electron transport chain and what are the final products?
Complex II is reduced and FADH2 is oxidized becoming FAD, the electrons continue down the electron transport chain providing the power to pump protons into the intermembrane space ( not as many protons as NADH because of the short delivery of FADH2 electrons to complex II ) where they fall down their concentration gradient through the synthase. Our electrons exit complex IV into the matrix where oxygen picks up two electrons and two protons forming water. 2H + 1/2O2 --> H2O.
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What is fad in cellular respiration?
FAD, or flavin adenine dinucleotide, is a crucial coenzyme in cellular respiration that acts as an electron carrier. It is involved primarily in the Krebs cycle (citric acid cycle) and the electron transport chain, where it helps to transport electrons and protons, facilitating ATP production. When FAD accepts electrons, it is reduced to FADH2, which later donates these electrons to the electron transport chain, contributing to the generation of ATP through oxidative phosphorylation.
What is the reaction when chlorophyll donates excited electrons?
the reaction center.
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
How many protons are pushed through the membrane for NAD and FAD and why are they different amounts?
NAD+ typically contributes to the transport of three protons (H+) across the mitochondrial membrane during oxidative phosphorylation, while FADH2 contributes to the transport of two protons. The difference in the number of protons is due to where each electron carrier enters the electron transport chain; NADH donates electrons at Complex I, which pumps more protons, whereas FADH2 donates electrons at Complex II, which does not pump protons, leading to the lower proton count.
How many valance electrons are there in Fr plus?
Fr is in the 1st period. It removes an electron to get noble gas configuration. Fr+ does not have valence electrons.Francium has 1 electron in its outermost energy level. It donates its outermost electron to stabilize its electron configuration. Francium(I) has no valence electrons.
How many electrons can a NADH molecule carry?
The electron transport chain is also known as the respiratory chain. NADH carries electrons in the form of hydrogen atoms to the electron transport chain.
How does NADH2 contribute to the electron transport chain in cellular respiration?
NADH2 donates electrons to the electron transport chain, which helps generate energy in the form of ATP during cellular respiration.
During aerobic respiration what directly donates electrons to the electron transport chain at the lowest energy level?
NADH and FADH2 donate electrons to the electron transport chain at the lowest energy level during aerobic respiration. These molecules are produced during earlier stages of cellular respiration (glycolysis and the citric acid cycle) and deliver high-energy electrons to the electron transport chain for ATP production.
When a compound donates electrons the compound becomes what?
if a neutral atom donates an electron it will gain a positive charge. This is due to electrons having a negative charge.
What is fad in cellular respiration?
FAD, or flavin adenine dinucleotide, is a crucial coenzyme in cellular respiration that acts as an electron carrier. It is involved primarily in the Krebs cycle (citric acid cycle) and the electron transport chain, where it helps to transport electrons and protons, facilitating ATP production. When FAD accepts electrons, it is reduced to FADH2, which later donates these electrons to the electron transport chain, contributing to the generation of ATP through oxidative phosphorylation.
What is the reaction when chlorophyll donates excited electrons?
the reaction center.
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
How many protons are pushed through the membrane for NAD and FAD and why are they different amounts?
NAD+ typically contributes to the transport of three protons (H+) across the mitochondrial membrane during oxidative phosphorylation, while FADH2 contributes to the transport of two protons. The difference in the number of protons is due to where each electron carrier enters the electron transport chain; NADH donates electrons at Complex I, which pumps more protons, whereas FADH2 donates electrons at Complex II, which does not pump protons, leading to the lower proton count.
What does FADH2 do in ETC?
FADH2 is an electron carrier similar to NADH, but only the second protein in the ETC accepts FADH2 electrons. So FADH2 is used in the ETC, but it produces less ATP due to it only entering the second protein in the ETC.
What is electron donor?
An electron donor is a substance that donates electrons to another substance during a chemical reaction, typically becoming oxidized in the process. In biological systems, molecules like NADH or FADH2 are electron donors that transfer electrons to the electron transport chain.
What molecule donates the second h plus and e plus to the electron transport chain?
y
How many valance electrons are there in Fr plus?
Fr is in the 1st period. It removes an electron to get noble gas configuration. Fr+ does not have valence electrons.Francium has 1 electron in its outermost energy level. It donates its outermost electron to stabilize its electron configuration. Francium(I) has no valence electrons.
