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What happens in a mitochondrion?
In a mitochondrion, cellular respiration occurs, where glucose and oxygen are converted into energy in the form of ATP. This process involves the citric acid cycle and the electron transport chain. Mitochondria are known as the powerhouse of the cell due to their role in generating energy for cellular activities.
How does malonate inhibit NADH?
Malonate inhibits NADH by competing with NAD+ for binding to the active site of enzyme NADH dehydrogenase within the electron transport chain. This competition prevents NADH from donating electrons to the enzyme, disrupting the flow of electrons and inhibiting ATP production.
The granules of the inner membrane of the mitochondrion are believed to be the site of chemical reaction that produce?
The granules of the inner membrane of the mitochondrion are believed to be the site of chemical reactions that produce ATP, which is the primary energy currency of the cell. These reactions are part of the electron transport chain and oxidative phosphorylation processes that generate ATP through the process of cellular respiration.
What is the function of the thylakoids in a chloroplast?
Thylakoids are membrane-bound compartments inside chloroplasts where photosynthesis takes place. They contain chlorophyll and other pigments that capture light energy to drive the reactions of photosynthesis, converting light energy into chemical energy. They also house the protein complexes involved in the electron transport chain that generates ATP and NADPH for the Calvin cycle.
What site do the empty transport RNA molecules leave the ribosomes at?
The empty transfer RNA (tRNA) molecules leave the ribosomes at the E site (exit site) once they have delivered their amino acid to the growing polypeptide chain.
What is the electron chain?
The electron transport chain in the mitochondrion is the site of oxidative phosphorylation in eukaryotes. Easy huh?
When is the electron transport chain carried out?
Plants, fungi, and animals are all eukaryotes and possess mitochondria, which is the site of the electron transport chain. Prokaryotes have no mitochondria and perform the electron transport chain across their cell membranes. Electron transport chain also occurs in thylakoid membrane of chloroplasts.
Where does a Electron Transport Chain happen?
In aerobic respiration, electron transport occurs inside the mitochondria. In photosynthesis, electron transport occurs inside the chloroplasts.
Where is the site of the electron transport system?
mitochondrial inner membrane (cristae)
Where do electrons from the Krebs cycle go next?
Electrons from the Krebs cycle are transferred to the electron transport chain located in the inner membrane of the mitochondria. These electrons are used to generate a gradient of protons across the membrane, which drives the production of ATP through oxidative phosphorylation.
In a cell the site of oxygen utilization is the?
The site of oxygen utilization in a cell is the mitochondria. Within the mitochondria, oxygen is used in the process of cellular respiration to generate energy in the form of ATP through the electron transport chain and oxidative phosphorylation.
Site of aerobic respiration in cells?
The site of aerobic respiration in cells is the mitochondria. This is where glucose is broken down in the presence of oxygen to produce energy in the form of adenosine triphosphate (ATP).
What is the difference between substrate level phosphorylation and chemiosmosis?
substrate level phosphorylation does not involve (electron transport chain), oxidative phosphorylation does. Substrate level phosphorylation involves the direct transfer of phosphate from a phosphate bearing molecule to ADP, thus yielding ATP. In cellular respiration, oxidative phosphorylation requires a protein, ATP synthase, to channel energy provided by a concentration of H ions; this energy results in the combining of phosphate with ADP.
Where is the electron transport system found on the bacteria?
In bacteria, the electron transport system is found in the plasma membrane. The plasma membrane of bacteria performs the same function as the inner mitochondrial membrane in eukaryotic cells, serving as the site for electron transport and oxidative phosphorylation to generate ATP.
In cellular respiration the most energy is transferred into ATP during what?
The most energy is transferred into ATP during the electron transport chain stage of cellular respiration. This is where the majority of ATP is produced through a series of redox reactions that generate a proton gradient across the inner mitochondrial membrane, driving ATP synthase to produce ATP.
What happens in a mitochondrion?
In a mitochondrion, cellular respiration occurs, where glucose and oxygen are converted into energy in the form of ATP. This process involves the citric acid cycle and the electron transport chain. Mitochondria are known as the powerhouse of the cell due to their role in generating energy for cellular activities.
What portion of the mitochondria has the lowest pH?
The intermembrane space of the mitochondria has the lowest pH. This area is maintained at a lower pH compared to the mitochondrial matrix, which helps drive ATP production during oxidative phosphorylation.
