Is the electron transport chain in the thylakoid?
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Is the electron transport chain in the thylakoid?
The photosystems and electron transport chain components are embedded in the thylakoid membrane. When light is absorbed by one of the pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center.
How does the electron transport chain differ in the mitochondria and chloroplasts?
Electron transport chain (ETC), which takes place in the mitochondria is called ‘oxidative phosphorylation,’ since the process utilizes chemical energy from redox reactions. In contrast, in the chloroplast this process is called ‘photo-phosphorylation’ since it utilizes light energy.
Where does the electron transport chain take place in the mitochondria?
inner mitochondrial membrane
Electron transport chain (ETC) occurs in the inner mitochondrial membrane, where the OXPHOS takes place through the action of ATP synthase, [37].
What is electron transport system in mitochondria?
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.
Where is the electron transport chain located in chloroplasts?
Instead, the electron-transport chains, photosynthetic light-capturing systems, and ATP synthase are all contained in the thylakoid membrane, a third distinct membrane that forms a set of flattened disclike sacs, the thylakoids (Figure 14-35).
Where does the electron transport chain take place?
mitochondria
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.
Where is the electron transport chain located in photosynthesis?
the thylakoid membrane
In photosynthetic eukaryotes, the electron transport chain is found on the thylakoid membrane. Here, light energy drives electron transport through a proton pump and the resulting proton gradient causes subsequent synthesis of ATP.
What happens on the thylakoid membrane?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
Where is electron transport chain located?
Since the electron transport chain is located in the inner mitochondrial membrane in eukaryotes, and since NADH cannot be transported from the cytosol into the mitochondrial matrix, NADH formed in the cytosol needs to be oxidized by another route.
Where is the thylakoid membrane?
the chloroplast
the thylakoid membrane, embedded in the stroma, encloses the aqueous lumen, which is the innermost compartment of the chloroplast.
In what ways is the electron transport chain in photosynthesis similar to and different from the one found in cellular respiration?
Both photosynthesis and cellular respiration make extensive use of harnessing the energy from flowing electrons to drive the synthesis of a product. In photosynthesis the main product is glucose, whereas in cellular respiration it is ATP (adenosine triphosphate).
What do mitochondria and thylakoid membranes have in common?
The mitochondrial membrane and thylakoids membranes have a couple things in common: Both membranes contain ATP Synthase Proteins.
How are chloroplasts and mitochondria well adapted for energy transfer?
In electron micrographs the most striking morphological feature of mitochondria and chloroplasts is the large amount of internal membrane they contain. This internal membrane provides the framework for an elaborate set of electron-transport processes that produce most of the cell’s ATP.
What drives the electron transport chain?
The Electron Transport Chain relies on the delivery of electrons from electron carriers. ATP is formed through the movement of protons down their gradient through a ATP synthase protein. The formation of the proton gradient is accomplished via a double membrane in the mitochondria.
Do mitochondria have thylakoid membranes?
In terms of its role in generation of metabolic energy, the thylakoid membrane of chloroplasts is thus equivalent to the inner membrane of mitochondria.
