What two processes happen inside the mitochondria?
The process is called oxidative phosphorylation and it happens inside mitochondria. In the matrix of mitochondria the reactions known as the citric acid or Krebs cycle produce a chemical called NADH. NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP).
What is the effect of the flow of protons through the inner mitochondrial membrane on cell respiration?
Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
What process generates a proton motive force in mitochondria?
The proton-motive force created by the pumping out of protons by the respiratory chain complexes is in the mitochondria of most tissues mainly used to translocate protons through the ATP synthase complex, leading to the formation of ATP from adenosine diphosphate (ADP) and phosphate.
What are the two components of the proton motive force?
The protonmotive force across the inner mitochondrial membrane (Δp) has two components: membrane potential (ΔΨ) and the gradient of proton concentration (ΔpH).
What is the proton motive force and how is it generated?
The proton motive force occurs when the cell membrane becomes energized due to electron transport reactions by the electron carriers embedded in it. Trapping the ions on either side of the membrane creates two things, which together make the proton motive force: a pH and a charge difference.
Why is Chemiosmosis called a proton motive force?
In mitochondria free energy released from the electron transport chain is used to move protons from the mitochondrial matrix to the intermembrane space of the mitochondrion. Together the electrochemical gradient of protons is both a concentration and charge difference and is often called the proton motive force (PMF).
Where is the proton motive force located?
Where is the proton motive force located in the mitochondria?
Mitochondrial respiration results in an electrochemical proton gradient, or protonmotive force (pmf), across the mitochondrial inner membrane (IM)….
What happens to the protons once they are involved in the proton motive force?
– ATP is produced; and O2 is used as a final electron acceptor. – transports nutrient from higher to lower concentration gradient. What happens to the protons once they are involved in the proton motive force? the protons will be combined with electrons and add O2; it will leave the system as H20.
What does proton motive force mean?
Proton motive force (PMF) is the force that promotes movement of protons across membranes downhill the electrochemical potential.
Which of these processes use the proton motive force?
Bacterial cells use the proton motive force to eject antibiotics and toxic compounds from the cytoplasm. Bacterial cells spend energy on maintaining ion balance and nutrient uptake.
How does the proton motive force lead to production of ATP quizlet?
How does the proton motive force lead to production of ATP? a. Protons must be pumped against a concentration gradient from outside of the cell into the cell to rotate the F0 subunit of ATPase for the F1 subunit to make ATP. Oxidative phosphorylation of ADP by ATP synthase requires protons as cofactors in the reaction.
How does proton gradient powers the synthesis of ATP?
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
Which step involves the release of carbon dioxide?
Which of the following describes the role of ATP synthase?
1 Answer. ATP synthase is a membrane protein which converts the proton gradient across membrane into energy storing molecule ATP, important for biological purposes.
What is ATP synthase in biology?
ATP synthase is an Protein that catalyzes the formation of the energy storage molecule adenosine triphosphate (ATP) using adenosine diphosphate (ADP) and inorganic phosphate (Pi).
What is 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 electron transport chain cranks out large amounts of ATP—in fact, it produces most of the ATP that a cell needs to drive all of its processes.