What happens when hydrogen ions are pumped out of the mitochondrial matrix?
When hydrogen ions are pumped out of the mitochondrial matrix, across the inner mitochondrial membrane, and into the space between the inner and outer membranes, the result is the lowering of the pH in the space between the inner and outer membranes damage to the mitochondrion the restoration of NADH to act as catalyst …
What happens when hydrogen ions are pumped across the inner mitochondrial membrane into the intermembrane space?
As described previously, the transfer of hydrogen ions into the intermembrane space creates a large concentration of positive charges and a large concentration of negative charges in the matrix, creating a large electrical potential across the inner membrane.
When hydrogen ions protons are pumped from the mitochondrial matrix across the inner membrane and into the intermembrane space the result is the?
Protons being pumped across the inner mitochondrial membrane is the job of the electron transport chain. This process is the beginning of oxidative phosphorylation, the last stage of cellular respiration.
What happens across the mitochondrial inner membrane when protons are pumped out from the matrix?
The electrons flow through the electron transport chain, causing protons to be pumped from the matrix to the intermembrane space. Eventually, the electrons are passed to oxygen, which combines with protons to form water.
What does pumping H+ ions across a cell membrane create?
The pumping of hydrogen ions across the inner membrane creates a greater concentration of the ions in the intermembrane space than in the matrix. This chemiosmotic gradient causes the ions to flow back across the membrane into the matrix, where their concentration is lower.
What happens to the concentration of H+ in the intermembrane space?
What happens to the concentration of H+ in the intermembrane space and the matrix as electrons move down the ETC? The concentration of the intermembrane increases while the concentration of the matrix decreases.
When protons are pumped outside the matrix across the inner membrane?
Protons are pumped out of the matrix at complexes I, III and IV (2 per complex). The resulting proton gradient is used to drive ATP synthesis: 2 H+ per ATP produced. The proton gradient also creates a charge difference across the inner mitochon. membrane.
What happens to the concentration of H+ in the intermembrane space and the matrix?
They react with oxygen and hydrogen ions to make water. What happens to the concentration of H+ in the intermembrane space and the matrix as electrons move down the ETC? The concentration of the intermembrane increases while the concentration of the matrix decreases.
Why are protons H+) pumped across the inner mitochondrial membrane?
The inner membranes of the large mitochondria in these cells contain a special transport protein that allows protons to move down their electrochemical gradient, by-passing ATP synthase. As a result, the cells oxidize their fat stores at a rapid rate and produce more heat than ATP.
What happens to the concentration of the H+ in the intermembrane space and the matrix as electrons move down the ETC?
What happens to the concentration of H+ in the intermembrane space and the matrix as electrons move down the ETC? The concentration of the intermembrane increases while the concentration of the matrix decreases.
What happens to the hydrogen ions H+) carried by NADH and fadh2?
Electrons carried by NADH + H+ and FADH2 are transferred to oxygen via a series of electron carriers, and ATPs are formed. Three ATPs are formed from each NADH + H+, and two ATPs are formed for each FADH2 in eukaryotes.
Why are protons H+) pumped across the inner mitochondrial membrane quizlet?
The pumping creates a proton gradient across the cell, which the mitochondria can tap into to create ATP.
What happens to hydrogen ions in the electron transport chain?
During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix, through ATP synthase, producing ATP.
What is the effect of H+ accumulation in the intermembrane space?
What is the effect of proton accumulation in the intermembrane space? The accumulation of protons decreases pH in the intermembrane space and creates a proton gradient.
What occurs as H+ ions pass through ATP synthase in the thylakoid membrane?
H+ ions pass back across the thylakoid membrane through ATP synthase. As the ions pass through, the Atp synthase molecule rotates and the energy produced is used to convert ADP To ATP.
When the H+ Re Enter the matrix they activate an enzyme called?
During electron transport, when the protons re-enter the mitochondria matrix they pass through the ATP synthase enzyme.
Why do hydrogen ions flow back across the mitochondrial membrane?
During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix, through ATP synthase, producing ATP.
What is the effect of H+ accumulation in the intermembrane space quizlet?
What is the effect of proton accumulation in the intermembrane space? The accumulation of protons decreases pH in the intermembrane space and creates a proton gradient.
What occurs as H+ ions pass through ATP synthase in the thylakoid membrane and what is this process called quizlet?
H+ ions pass back across the thylakoid membrane through ATP synthase. As the ions pass through, the Atp synthase molecule rotates and the energy produced is used to convert ADP To ATP.
How are H+ ions moved out of the thylakoid interior?
A protein called ATP synthase on the thylakoid membrane allows H+ ions to pass through the membrane since they cannot cross on their own.
What occurs as H+ ions pass through ATP?
H+ ions pass back across the thylakoid membrane through ATP synthase. As the ions pass through, the Atp synthase molecule rotates and the energy produced is used to convert ADP To ATP.
What occurs as H+ ions pass through the ATP synthase in the thylakoid membrane and what is this process called?
The flow of hydrogen ions through ATP synthase is called chemiosmosis, because the ions move from an area of high to low concentration through a semi-permeable structure.
What transport process moves H+ across thylakoid membrane?
The electron transport chain moves protons across the thylakoid membrane into the lumen.
How do hydrogen ions make their way from the stroma to the thylakoid interior?
As the electron passes along the electron transport chain, energy from the electron fuels proton pumps in the membrane that actively move hydrogen ions against their concentration gradient from the stroma into the thylakoid space.
What happens during hydrogen ion movement and ATP formation?
The movement of electrons through an electron transport chain causes a thylakoid to fill up with hydrogen ions and generates ATP and NADPH. ATP synthase is a membrane protein through which excess hydrogen ions escape a thylakoid in a process that makes ATP. thylakoids and are commonly called the Calvin cycle.
What happens in hydrogen ion movement and ATP formation?
The movement of electrons through an electron transport chain causes a thylakoid to fill up with hydrogen ions and generates ATP and NADPH. ATP synthase is a membrane protein through which excess hydrogen ions escape a thylakoid in a process that makes ATP. thylakoids and are commonly called the Calvin cycle.
How are hydrogen ions pumped across the thylakoid membrane?
The hydrogen ions are allowed to pass through the thylakoid membrane through an embedded protein complex called ATP synthase. This same protein generated ATP from ADP in the mitochondrion.
Where are hydrogen ions pumped in photosynthesis?
the thylakoid space In Summary: The Light-Dependent Reactions of Photosynthesis Energy travels through the electron transport chain, which pumps hydrogen ions into the thylakoid space. This forms an electrochemical gradient.
What step in photosynthesis do electrons move energy down and H+ ions are pumped from the stroma into the thylakoid space?
In Summary: The Light-Dependent Reactions of Photosynthesis Energy travels through the electron transport chain, which pumps hydrogen ions into the thylakoid space. This forms an electrochemical gradient.
What is being produce when hydrogen ions are pumped from the stroma to the thylakoid?
The hydrogen ions are allowed to pass through the thylakoid membrane through an embedded protein complex called ATP synthase. This same protein generated ATP from ADP in the mitochondrion.