The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria.
Where is the electron transport chain found in a eukaryotic cell quizlet?
In eukaryotes, an the electron transport chain is found in the inner mitochondrial membrane where as in prokaryotes it is found in the cell membrane.
Where does the electron transport chain take place in a eukaryotic cell?
In eukaryotic organisms the electron transport chain, and site of oxidative phosphorylation, is found on the inner mitochondrial membrane.
Where does the electron transport chain take place in a prokaryotic cell?
The electron transport chain of aerobically respiring prokaryotic and eukaryotic cells is found across the cytoplasmic membrane.
Where are electron transport chains found in cells?
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.
Which of the following passes high energy electrons into the electron transport chain?
High energy elections are passed into the electron transport chain by means of an electron carrier called NADH.
Where does the electron transport chain occur in aerobic bacteria?
All enzymes required for the electron transport chain of bacteria are membrane bound as in eukaryotic cells, but in bacteria these molecules are present in the plasma membrane because bacteria have no mitochondria.
Where does the electron transport chain occur in eukaryotes and prokaryotes?
In Eukaryotes it occurs in inner membrane of mitochondria while in prokaryotes it occurs in cell plasma membrane.
Where is the respiratory electron transport chain located in aerobic prokaryotes?
The only membrane in prokaryotes is the cellular membrane, that is where the ETC is located.
https://youtube.com/watch?v=YFF7lm4gwis
Where is the electron transport chain located in chloroplasts?
Instead, the chloroplast electron transport system is located in the thylakoid membrane, and protons are pumped across this membrane from the stroma to the thylakoid lumen.
Where in the mitochondria is the electron transport chain?
The ETC is embedded within the extensive inner membrane of the mitochondrion, in close proximity to the mitochondrial matrix in which the TCA cycle is localized (Fig. 1).
What passes the high-energy hydrogen electrons to the electron transport chain?
The electron carriers produced during glycolysis and the Krebs cycle bring high-energy electrons to the electron transport chain. Oxygen is the final electron acceptor.
What is the energy of the electrons passing along the electron transport chain used for?
In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.
Where is the electron transport chain located in bacterial cells quizlet?
In bacterial cells, the electron transport system is located in the: cell membrane.
Where is the electron transport chain located in bacteria quizlet?
The Electron Transport Chain (ETC) is located in the Cristae of the inner mitochondrial membrane in Eukaryotes, and the cell membrane of bacteria (Prokaryotes). The components of the ETC are arranged in a precise order.
Is electron transport chain aerobic or anaerobic?
The electron transport chain is the portion of aerobic respiration that uses free oxygen as the final electron acceptor of the electrons removed from the intermediate compounds in glucose catabolism.
Where is the respiratory electron transport system located in cell?
The respiratory chain, otherwise known as the electron transport chain, resides in the mitochondria. A single molecule of NADH has sufficient energy to generate three ATP molecules from ADP.
Where does electron transport occur in plants?
The above illustration draws from ideas in both Moore, et al. and Karp to outline the steps in the electron transport process that occurs in the thylakoid membranes of chloroplasts during photosynthesis. Both Photosystems I and II are utilized to split water to get electrons.
Where do electrons in the electron transport chain come from photosynthesis?
In plants, the so-called “light” reactions occur within the chloroplast thylakoids, where the aforementioned chlorophyll pigments reside. When light energy reaches the pigment molecules, it energizes the electrons within them, and these electrons are shunted to an electron transport chain in the thylakoid membrane.
What is electron transport in photosynthesis?
Photosynthetic electron transport is the first stage of photosynthesis that produces chemically stored energy and uses solar photons to drive electron transport against a thermodynamic gradient.
Which of the following enters electron transport chain?
Most of the energy that enters the electron transport chain enters as FADH2 and NADH, which are reduced electron carriers.
What are electron transport chain products?
The end products of electron transport are NAD+, FAD, water and protons. The protons end up outside the mitochondrial matrix because they are pumped across the cristal membrane using the free energy of electron transport.
How many electron transport chains are there in a mitochondria?
Respiratory Chains
The respiratory chain of mammalian mitochondria is an assembly of more than 20 discrete carriers of electrons that are mainly grouped into several multi-polypeptide complexes (Figure 5.1). Three of these complexes (I, III and IV) act as oxidation–reduction-driven proton pumps.
How are electrons transported in the electron transport chain?
Electrons from electron carriers, such as NADH and FADH2, go through the electron transport chain, which involves a series of molecules that accept and donate electrons. … The oxygen molecule accepts the electron from the final protein in the chain and becomes water, one of the final products of metabolism.
How is energy released in the electron transport chain?
The electron carriers take the electrons to a group of proteins in the inner membrane of the mitochondrion, called the electron transport chain. … Energy released in the electron transport chain is captured as a proton gradient, which powers production of ATP by a membrane protein called ATP synthase.
Where do the hydrogen ions come from in the electron transport chain?
As the high-energy electrons are transported along the chains, some of their energy is captured. This energy is used to pump hydrogen ions(from NADH and FADH2) across the inner membrane, from the matrix into the intermembrane space.
How does the electron transport chain work 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 flow of the ions back across the membrane synthesises ATP by a protein called ATP synthase. Oxygen is the final hydrogen ion and electron acceptor.
How do electrons enter the electron transport chain quizlet?
All of the electrons that enter the transport chain come from NADH and FADH2 molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle. … NADH and FADH2 pass their electrons to the electron transport chain, turning back into NAD+ and FAD.
Where is the electron transport chain located 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.