Where does the electron transport chain occur within the cell?
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 etc found in eukaryotic cells?
Eukaryotic cell The electron transport system is located in the inner membrane of the mitochondria. It contributes to the production of ATP molecules via chemiosmosis.
Does the electron transport chain take place in the cytoplasm?
In an electron transport system, electrons pass from carrier to carrier through a series of oxidation-reduction reactions. Depending on the type of cell, the electron transport chain may be found in the cytoplasmic membrane or the inner membrane of mitochondria.
What cell structure is the site of cellular respiration?
Prokaryotic cells carry out cellular respiration within the cytoplasm or on the inner surfaces of the cells. More emphasis here will be placed on eukaryotic cells where the mitochondria are the site of most of the reactions.
What is the primary function of the electron transport chain?
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 are the components of electron transport chain?
The components of the chain include FMN, Fe–S centers, coenzyme Q , and a series of cytochromes (b, c1, c, and aa3). The energy derived from the transfer of electrons through the electron transport chain is used to pump protons across the inner mitochondrial membrane from the matrix to the cytosolic side.
Where is the electron transport chain 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.
Does the electron transport chain require oxygen?
The electron transport chain (Figure 1) is the last component of aerobic respiration and is the only part of glucose metabolism that uses atmospheric oxygen . Note, however, that the electron transport chain of prokaryotes may not require oxygen as some live in anaerobic conditions.
What is the electron transport chain also known as?
The respiratory chain , otherwise known as the electron transport chain , resides in the mitochondria. The chain consists of a series of electron carriers which can accept and then donate electrons , while the resulting production of energy is used to stimulate the formation of ATP via oxidative phosphorylation.
How much ATP does the electron transport chain produce?
A total of 32 ATP molecules are generated in electron transport and oxidative phosphorylation.
Why does the electron transport chain produce the most ATP?
During this process electrons are exchanged between molecules, which creates a chemical gradient that allows for the production of ATP. The most vital part of this process is the electron transport chain, which produces more ATP than any other part of cellular respiration .
What are the major events of the electron transport chain?
The events of the electron transport chain involve NADH and FADH, which act as electron transporters as they flow through the inner membrane space. In complex I, electrons are passed from NADH to the electron transport chain , where they flow through the remaining complexes. NADH is oxidized to NAD in this process.
What is the raw materials of respiration?
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Why cellular respiration is more efficient when oxygen is present in cells?
Why oxygen ? Oxygen is the final electron acceptor at the end of the electron transport chain of aerobic respiration . In the absence of oxygen , only a few ATP are produced from glucose. In the presence of oxygen , many more ATP are made.
What does the cell membrane do in cellular respiration?
the inner mitochondrial membrane : organizes the electron transport chain and holds ATP synthase, the cristae: expand the surface area of the inner mitochondrial membrane , enhancing its ability to produce ATP, and. the matrix: site of ATP synthesis and the location of the Krebs cycle.