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 the electron transport chain in simple terms?
The electron transport chain is a cluster of proteins that transfer electrons through a membrane within mitochondria to form a gradient of protons that drives the creation of adenosine triphosphate (ATP).
What is the electron transport chain your answer?
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 electron transport chain and what is its purpose?
Explanation: The electron transport chain is used to pump protons into the intermembrane space. This establishes a proton gradient, allowing protons to be pumped through ATP synthase in order to create ATP. This method of ATP production is called oxidative phosphorylation.
What has an electron transport chain?
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Electrons are passed from one member of the transport chain to another in a series of redox reactions.
What is the primary role of the electron transport chain quizlet?
The main purpose of the electron transport chain is to build up a surplus of hydrogen ions (protons) in the intermembrane space sp that there will be a concentration gradient compared to the matrix of the mitochondria. This will drive ATP synthase.
What is the main function of the electron transport chain and oxidative phosphorylation processes quizlet?
Solution:The coenzymes NADH and FADH₂ are oxidized by the electron transport chain, and this oxidative process is coupled to phosphorylation of ADP to form ATP. Production of ATP is the main function of the overall process.
What are the two primary functions of the electron transport chain quizlet?
The primary purpose of the electron transport chain is to produce acetyl-CoA. The primary purpose of the electron transport chain is to harvest the energy from electrons moving down this pathway to produce ATP and water.
What is the difference between electron transport and oxidative phosphorylation quizlet?
The electron transport to oxygen is a highly exergonic process. Oxidative phosphorylation is an endergonic process, that produces ATP. … electrons are passed from carrier to carrier, leading to pumping of protons across inner mitochondrial membrane from matrix to intermembrane space, creaing a pH gradient.
What is the primary role of the electron transport chain Labster?
Two basic functions of electron transport chain are as follows: Facilitating the transfer of electrons from the primary donor to terminal acceptor. Conserving energy that been released during electron transfer for ATP synthesis.
Why is the electron transport chain aerobic?
In this step of cellular respiration, electron carriers NADH and FADH2 drop off the electrons they’ve carried from the citric acid cycle. This drop-off allows a large number of ATP molecules to form. In fact, 34 ATP are produced. The ETC is directly aerobic because it uses oxygen and converts it into water.
What two processes are coupled throughout the ETC that together make up oxidative phosphorylation quizlet?
What two processes are coupled throughout the ETC that together make up oxidative phosphorylation? The oxidation of electron carriers and the phosphorylation of ADP.
What is the P O ratio for the oxidation of NADH in electron transport chain quizlet?
What is the P/O ratio for the oxidation of succinate/FADH2 in electron transport chain? Which statements about oxidative phosphorylation are true? 1 The mechanisms of phosphorylation and oxidation are directly coupled. 2 The P/O for NADH is ~2.5.
Which process involves the diffusion of protons across the mitochondrial membrane quizlet?
Which event occurs in the light reactions of photosynthesis? In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix.
What is the role of the electron transport chain in generating ATP during exercise?
Electron carriers such as NADH produced during glycolysis and the Krebs cycle pass their electrons to the electron transport chain, which results in synthesis of a lot of ATP.
What do the electron transport chain and fermentation have in common?
Similarities: Both cellular respiration and fermentation are process that break down food and convert the chemical energy stored in the food to ATP molecules. Both these processes begin with glycolysis and convert glucose to pyruvate.
In what order do the electrons move through the electron transport chain?
The electrons must travel through special proteins stuck in the thylakoid membrane. They go through the first special protein (the photosystem II protein) and down the electron transport chain. Then they pass through a second special protein (photosystem I protein).
What role does the electron transport chain play in generating ATP quizlet?
The electron transport chain provides about one-third less energy for ATP synthesis when the electron donor is FADH2 rather than NADH. to break the large free energy drop from food to oxygen into a series of smaller steps that release energy in manageable amounts.
Why must the electron transport chain proteins and molecules be embedded in the membrane?
Why must the electron transport chain proteins and molecules be embedded in a membrane? So that protons can be compartmentalized and form a gradient. Which of the following is the enzyme used to synthesize ATP? Which statement describes the role of a proton pump in energy conversion?
What is the P O ratio for the oxidation of succinate FADH2 in electron transport chain?
The trend is to correct the numerous measurements toward a P/O ratio of 1.5 for succinate- or FADH2-linked substrates, and 2.5 for NADH- linked substrates (11, 12, 13), values that appear in current textbooks (14, 15).
Why is β hydroxybutyrate added rather than NADH?
Why is β-hydroxybutyrate added rather than NADH? Because NADH cannot freely enter the mitochondrion. What is the function of the cyanide?
Which statement is not true of electron transport?
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.
Where is the electron transport chain located in bacterial cells quizlet?
In bacterial cells, the electron transport system is located in the: cell membrane.
What is true about the electron transport chain ETC )? Sophia?
What is true about the electron transport chain (ETC)? The largest byproduct of the electron transport chain is carbon dioxide. ATP and water are products of the electron transport chain. The electron transport chain produces the same number of ATP as the Krebs cycle.
How does the cell use the energy released from the electron transport chain quizlet?
Every time a pair of high-energy electrons moves down the Electron Transport Chain, the energy is used to move Hydrogen Ions across the Membrane. These Ions then rush back across the Membrane with enough force to spin the ATP Synthase and generate enormous amounts of ATP.
How is the electron transport chain energized?
As the electron from the electron transport chain arrives at photosystem I, it is re-energized with another photon captured by chlorophyll. The energy from this electron drives the formation of NADPH from NADP+ and a hydrogen ion (H+).
Where is the electron transport chain in cellular respiration?
The electron transport chain is the last stage of the respiration pathway. It is the stage that produces the most ATP molecules. The electron transport chain is a collection of carrier proteins found on the inner membrane of mitochondria.
What stage is the electron transport chain?
With an electron transport chain, the third stage of aerobic respiration. This third stage uses energy to make energy.