Where is electron transport chain located in prokaryotes?
Where is electron transport chain located in prokaryotes?
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.
Where is the electron transport chain located in the mitochondria?
inner membrane
The electron transport chain activity takes place in the inner membrane and the space between the inner and outer membrane, called the intermembrane space.
Where is the electron transport chain located in eukaryotes and prokaryotes?
In Eukaryotes it occurs in inner membrane of mitochondria while in prokaryotes it occurs in cell plasma membrane.
Is the electron transport chain located in the thylakoid membrane of mitochondria?
In eukaryotic organisms the electron transport chain, and site of oxidative phosphorylation, is found on the inner mitochondrial membrane. In photosynthetic eukaryotes, the electron transport chain is found on the thylakoid membrane.
How does electron transport chain work in prokaryotes?
The electron transport chains of bacteria (prokaryotes) operate in plasma membrane (mitochondria are absent in prokaryotes). Some bacterial electron transport chains resemble the mitochondrial electron transport chain. Electrons often enter at several points and leave through several terminal oxidases.
Where does the electron transport chain occur in prokaryotes quizlet?
from inside the cell to outside the cell membrane. *In prokaryotic cells, the electron transport chain resides in the cytoplasmic membrane. Protons are pumped from inside the cell to the outside.
Why does the electron transport chain occur in the inner mitochondrial membrane?
The electron transport chain occurs across the inner mitochondrial membrane. Its main function is to build an electrochemical gradient across the inner membrane using protons. The ETC pumps hydrogen ions out of the matrix of the mitochondria and into the intermembrane space.
What is the inner mitochondrial membrane?
The inner mitochondrial membrane is both an electrical insulator and chemical barrier. Sophisticated ion transporters exist to allow specific molecules to cross this barrier. There are several antiport systems embedded in the inner membrane, allowing exchange of anions between the cytosol and the mitochondrial matrix.
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).
Where does electron transport oxidative phosphorylation occur in prokaryotes quizlet?
The oxidative phosphorylation and the ATP synthase take place in the cell membrane of the prokaryotes.
Where is the electron transport chain located in prokaryotes?
They are arranged in four complexes. In eukaryotes, the electron transport chain is located in the inner mitochondrial membrane. In prokaryotes, it is located within the plasma membrane.
What is the terminal electron acceptor in the electron transport chain?
Cytochrome c Oxidase (Complex IV, CcO) is the terminal electron acceptor in the electron transport chain (ETC). The ETC is located in the inner mitochondrial membrane of eukaryotic cells and the plasma membrane of prokaryotic cells [Bertini]. The ETC couples the redox transfer of electrons to the generation of a proton gradient.
Do prokaryotic cells have an etc?
Prokaryotes do not have organelles such as mitochondria, but they do have an ETC. A membrane is required for the ETC to work, otherwise it would not be possible to build a gradient of hydrogen atoms. The only membrane in prokaryotes is the cellular membrane, that is where the ETC is located.
How do fat cells uncouple the electron transport chain?
Some specialized fat cells, known as brown fat, uncouple the electron transport chain in order to dissipate the energy as heat. This is accomplished through a transport protein that moves protons down the electrochemical gradient, bypassing ATP synthase.
