What Is The Function Of The Electron Transport Chain In Cellular Respiration

What Is The Function Of The Electron Transport Chain In Cellular Respiration?

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.

What is the function of the electron transport chain in cellular respiration quizlet?

What is the function of the electron transport chain in cellular respiration? The electron transport chain shuttles electrons down a series of redox reactions that release energy used to make ATP.

What is the function of the electron transport chain etc )?

The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process protons are pumped from the mitochondrial matrix to the intermembrane space and oxygen is reduced to form water.

What is the function of the electron transport chain and where does it occur?

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 function of an electron in 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 are the end products created when oxidizing foods?

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What happens during electron transport?

During electron transport energy is used to pump hydrogen ions across the mitochondrial inner membrane from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix through ATP synthase producing ATP.

What are the electron acceptors in cellular respiration?

Explanation: In cellular respiration oxygen is the final electron acceptor. Oxygen accepts the electrons after they have passed through the electron transport chain and ATPase the enzyme responsible for creating high-energy ATP molecules.

Why is electron transport chain important?

The ETC is the most important stage of cellular respiration from an energy point of view because it produces the most ATP. … When a cell needs energy it breaks the third phosphate group bond and uses the resulting energy.

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). ATP is used by the cell as the energy for metabolic processes for cellular functions.

Where does the electron transport chain take place in photosynthesis?

the thylakoid membrane
In photosynthetic eukaryotes the electron transport chain is found on the thylakoid membrane. Here light energy drives the reduction of components of the electron transport chain and therefore causes subsequent synthesis of ATP.

Where does the electron transport chain take place in prokaryotic cells?

In prokaryotes the electron transport chain components are found in the plasma membrane. As the electrons travel through the chain they go from a higher to a lower energy level moving from less electron-hungry to more electron-hungry molecules.

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 happens in the electron transport chain quizlet?

The electron transport chain is a process that moves hydrogen ions across a membrane to produce large amounts of ATP. The final step in transferring the energy of sunlight and glucose to the usable energy of ATP takes place during the electron transport chain.

Why are electrons important in cellular respiration?

In cellular respiration electrons from glucose move gradually through the electron transport chain towards oxygen passing to lower and lower energy states and releasing energy at each step. The goal of cellular respiration is to capture this energy in the form of ATP.

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Where does electron transport occur during cellular respiration?

The Krebs cycle and electron transport occur in the mitochondria. The Krebs cycle takes place in the matrix and electron transport takes place on the inner membrane.

How does the electron transport chain make ATP?

The process of forming ATP from the electron transport chain is known as oxidative phosphorylation. Electrons carried by NADH + H+ and FADH2 are transferred to oxygen via a series of electron carriers and ATPs are formed. Three ATPs are formed from each NADH + H+ and two ATPs are formed for each FADH2 in eukaryotes.

How do electrons move through the electron transport chain?

As electrons are passed through the chain by a series of oxidation-reduction reactions energy is released creating a gradient of hydrogen ions or protons across the membrane. … Electrons move through the electron transport chain from a higher to lower energy state.

What do electron acceptors do?

An electron acceptor is a chemical entity that accepts electrons transferred to it from another compound. It is an oxidizing agent that by virtue of its accepting electrons is itself reduced in the process. … This phenomenon gives rise to the wide field of Lewis acid-base chemistry.

Why is the electron transport chain aerobic?

The ETC requires oxygen which means that it is an aerobic process. It takes place in the folds of the inner membrane of the mitochondria. These folds are called cristae. … The ETC is directly aerobic because it uses oxygen and converts it into water.

What is electron function?

Electrons are the negatively charged particles of atom. Together all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus. Electrons are extremely small compared to all of the other parts of the atom.

What are the 3 main 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.

What is the function of electron transport chain during photosynthesis?

Electron transport helps establish a proton gradient that powers ATP production and also stores energy in the reduced coenzyme NADPH. This energy is used to power the Calvin Cycle to produce sugar and other carbohydrates.

What is the role of the electron transport chain in the process of photosynthesis?

Photosynthetic electron transport converts free and abundant solar energy into reducing power and chemical energy for producing biomass and biofuels through transferring electrons sequentially from H2O through Photosystem II and then Photosystem I to NADP+ in chloroplasts of higher plants and photosynthetic algae or in …

How is the electron transport chain in cellular respiration different from the electron transport chain in photosynthesis?

Photosynthesis uses the energy obtained from light to free electrons from the chlorophyll pigments that collect the light. … In cellular respiration the electron transport chain occurs after glucose has already been broken down.

What does the electron transport chain differ in eukaryotes and prokaryotes?

Electron transport chain produces most of ATP. (34) In Eukaryotes ETC occurs in inner membrane of mitochondria. But prokaryotes doesn’t have mitochondria which is a membranes bound organelle. The only membrane prokaryotes have is their plasma membrane.

Where does the electron transport chain occur in prokaryotic cells and eukaryotic cells respectively?

Explanation: The organism is likely a prokaryotic organism since it lacks a nuclear membrane and mitochondria. Prokaryotes lack all membrane-bound organelles including nuclei mitochondria endoplasmic reticulum chloroplasts and lysosomes. Both prokaryotes and eukaryotes contain ribosomes.

Where does the electron transport chain occur in prokaryotes quizlet?

*In prokaryotic cells the electron transport chain resides in the cytoplasmic membrane. Protons are pumped from inside the cell to the outside. See section 6.4 in the text for more information. from the mitochondrial matrix to the region between the inner and outer mitochondrial membranes (intermembrane space).

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 the main function of oxidative phosphorylation?

Oxidative phosphorylation is a highly efficient method of producing large amounts of ATP the basic unit of energy for metabolic processes. During this process electrons are exchanged between molecules which creates a chemical gradient that allows for the production of ATP.

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What is the main function of oxidative phosphorylation quizlet?

Part of the electron transport chain. A process occurring in the mitochondria that results in the formation of ATP from the flow of electrons across the inner membrane to bind with oxygen.

What role do high energy electrons play in the electron transport chain?

What role do high-energy electrons play in the electron transport chain? High-energy electrons from the Krebs cycle and glycolysis are used to convert ADP to ATP in the electron transport chain. … The products are carbon dioxide water and ATP.

How does the electron transport chain use the energy that was originally in glucose to generate ATP?

During electron transport energy is used to pump hydrogen ions across the mitochondrial inner membrane from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix through ATP synthase producing ATP.

Why does the electron transport chain produce the most ATP?

Electron transport chain produces an electrochemical gradient which facilitates the synthesis of ATP by ATP synthase by chemiosmosis.

Why do electrons move down the electron transport chain?

Explanation: The direct purpose of moving electrons down the electron transport chain is to pump protons (hydrogen ions) into the intermembrane space. This creates a chemiosmotic gradient that the cell uses to generate ATP by selectively allowing hydrogen ions to move back into the mitochondrial matrix.

Electron Transport Chain (Oxidative Phosphorylation)

Cellular Respiration (Electron Transport Chain)

The Electron Transport Chain Explained (Aerobic Respiration)

Cellular Respiration Part 3: The Electron Transport Chain and Oxidative Phosphorylation

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