AdministratorWhat does electron transport chain do in cellular respiration?
The primary task of the last stage of cellular respiration, the electron transport chain, is to transfer energy from the electron carriers to even more ATP molecules, the “batteries” which power work within the cell.
What is a simple definition of electron transport chain?
The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation. It occurs in mitochondria in both cellular respiration and photosynthesis.
What is the role of electron transport chain?
The electron transport chain is primarily used to send protons across the membrane into the intermembrane space. This create a proton-motive force, which will drive ATP synthase in the final step of cellular respiration to create ATP from ADP and a phosphate group.
Where is the electron transport chain in respiration?
mitochondria
During cellular respiration, organic compounds are oxidized to generate usable chemical energy in the form of ATP. The respiratory electron transport chain (ETC) of mitochondria is at the center of this process.
What are the steps of the electron transport chain?
The three main steps in the electron transport chain are:
- Generation of a proton gradient across the mitochondrial membrane. Proton accumulation occurs in the intermembrane space of mitochondria.
- Reduction of molecular oxygen and formation of water.
- ATP synthesis by chemiosmosis.
Which statements describe electron transport chain events?
Which statements describe electron transport chain events? -Two electrons pass between cytochromes through a series of redox reactions. -NADH releases two hydrogen ions and donates two electrons to coenzyme Q. Which of the molecules is the major regulator of oxygen consumption during oxidative phosphorylation?
What is an electron transport chain quizlet?
Electron Transport Chain. A sequence of electron carrier molecules (membrane proteins) that shuttle electrons during the redox reactions that release energy used to make ATP.
What is an electron transport chain in glycolysis?
3 Electron Transport Chain. The electron transport chain is the last step in the conversion of glucose into ATP, as illustrated in Figure 8.26. It involves a series of enzyme catalyzed chemical reactions that transfer electrons from ( N A D H + H + ) and F A D H 2 (donor molecules) to acceptor molecules.
Which statements describe electron transport chain events quizlet?
Which of the following does not describe the electron transport chain?
Answer and Explanation: The only statement that is not true of the electron transport chain (ETC) is d. Without oxygen, the ETC is able to produce substantially greater amounts of ATP via aerobic metabolism. The ETC requires oxygen to function in aerobic metabolism, as it is the final electron acceptor in the chain.
What are the major electron carriers in cellular respiration?
In cellular respiration, there are two important electron carriers, nicotinamide adenine dinucleotide (abbreviated as NAD + in its oxidized form) and flavin adenine dinucleotide (abbreviated as FAD in its oxidized form).
Where does electron transport occur during cellular respiration?
Electron Transport Chain (Oxidative Phosphorylation)
What are electrons passed from during electron transport chain?
– First, it has mass, which gives it energy according to E=mc² – Second, it has momentum… kinetic energy – Third, it has energy from its charge. This is the potential energy that would be released if quantisation didn’t prevent it from spinning into the nucleus – much like the
What is the Order of the electron transport chain?
The electron transport chain releases the energy stored within the reduced hydrogen carriers in order to synthesise ATP This is called oxidative phosphorylation , as the energy to synthesise ATP is derived from the oxidation of hydrogen carriers