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What happens to the ATP when the Na ions are passed out of the cell?
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What happens to the resting membrane potential if ATP was depleted in a nerve cell?
All active transportation of ions would stop and ions would be allowed to run down their concentration gradients, eventually reaching equilibrium. At this stage there would be no more electrochemical potential difference across the cell membrane.
Which statement is true about the movement of the ions through the Na/K pump?
For each molecule of ATP used, the pump moves three positively charged sodium ions out of the cell.
Does the sodium-potassium pump use ATP or produce ATP?
Yes. It is open to the cytoplasm and has a high affinity and three binding sites for sodium ions which dock in the trans-member protein pump. An ATP phosphorylates the pump and a conformational change causes the pump to expose the sodium ions to the extra cellular space due to low affinity for sodium ions in this conformation. This conformation has high affinity for potassium ions and two ions dock on the protein pump. The phosphate group that was on the pump disassociates and a conformational change exposes the potassium ions to the cytoplasm where they, now having low affinity for the pump, fall into the cytoplasm. The cycle repeats. and the electrical balance, slight positivity on the outside of the cell and slight negativity on the inside of the cell, is maintained.
Where is the energy released from during the breakdown of ATP?
ATP, or Adenosine Triphosphate, is found in cells. When ATP is broken down, the energy that it contains can be in the form of heat that is released by the cell, or the cell can use it as an energy source.
What are the 3 systems that produce ATP?
Glycolysis produces 2 ATP and happens in the cytosol of the cell Citric acid cycle (AKA Krebs cycle) produces 2 ATP. This happens in the mitochondria of the cell. Electron Transport Chain w/ oxidative phosphorylation produces 32 ATP. This also happens in the mitochondria of the cell.
What membrane activities require energy from ATP hydrolysis?
Sodium ions moving out of the cell
What is the process by which ATP is used to move sodium ions out of the cell and potassium ions back into the cell and completely restores the resting conditions of the neuron?
repolarization
What are the two main kinds of movement that happens into and out of the cell?
Ions and molecules move into and out of the cell by two main methods:Passive transport does not require any energy. Molecules wither diffuse into the cell or enter the cell via transporter proteins located on the cell membrane.Active transport requires the use of ATP molecules to move ions or molecules into and out of the cell.
What is a carrier protein that used ATP to actively transport sodium ions out of a cell and potassium ions into the cell?
That would be the Sodium-Potassium pump. Pretty creative name eh?
What is ATP and is its role in the cell?
a large protein that uses energy from H+ ions to bind ADP and a phosphate group together to produce ATP.
What is ATP and what role is it in the cell?
a large protein that uses energy from H+ ions to bind ADP and a phosphate group together to produce ATP.
What does the Na1 Ka1ATPase transport sodium and potassium into a cell sodium and potassium out of a cell sodium into cell potassium out of cell sodium out of cell potassium in ATP?
NaKATPase transports 3 K ions into the cell and takes only two Na ions out of it.
What happens to ATP when a muscle cell demands energy to contract?
ATP is hydrolyzed and turned into ADP
When a muscle cell demands energy to contract what happens to ATP?
ATP is hydrolyzed and turned into ADP
What happens to the resting membrane potential if ATP was depleted in a nerve cell?
All active transportation of ions would stop and ions would be allowed to run down their concentration gradients, eventually reaching equilibrium. At this stage there would be no more electrochemical potential difference across the cell membrane.
Describe cellular activities that use the energy released by ATP?
Cells use the energy provided by ATP in a number of ways. One was is active transport. many cell membranes contain a sodium-potassium pump that moves sodium ions (Na) out of the cell and potassium ions (K) into it. ATP also powers movement within the cell. Cell organelles are moved along microtuble by motor proteins that use the energy of ATP to generate force. When enough ATP is available, the organelles moves quickly along the microtuble.
Process by which ATP is used to move sodium ions out of the cell and potassium ions back into the cell?
Sodium-Potassium pump uses ATP (energy) to pump sodium out of cells and potassium back in.
