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When a molecule of ATP is hydrolyzed which phosphate group is the first to be broken off?
Wiki User
∙ 10y ago
The last of the three PO4 groups is broken off releasing energy.
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∙ 10y ago
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How much ATP energy is invested in glycolysis?
2 ATP molecules are invested during glycolysis per each glucose molecule that is being metabolized. The first ATP molecule intervenes in the very first step, that is: from glucose to glucose 6-phosphate, catalyzed by a hexokinase, releasing an ADP molecule. The second ATP molecule is used in the third step: from fructose 6 phosphate to fructose 1,6-bisphosphate, catalyzed by a phosphofructokinase, and releasing also an ADP molecule.
IF ATP is vital to the sodium potassium pump how?
First, the pump is open to the inside of the cell. It naturally "likes"* the sodium (and "dislikes" potassium) so it attracts sodium ions. An ATP molecule then gives one of its phosphate groups to the pump, causing the pump to change. That ATP molecule is now and ADP molecule. With the addition of the phosphate group, the pump now "dislikes" sodium and "likes" potassium. So it closes and reopens to the outside of the cell, releasing the sodium. It attracts potassium ions. Next, the pump gives its phosphate group back to the ADP molecule. That ADP molecule is now an ATP molecule again. Without the phosphate group, the pump "likes" sodium and "dislikes" potassium again. So it closes and reopens to the inside of the cell, releasing the potassium into the cell. The pump now attracts sodium ions. The cycle starts again. For every three sodium ions released, two potassium ions enter. *"Likes" or "dislikes" refer the pump having a higher or lower affinity (attraction) for one of the two elements. To answer your question, the ATP molecule is the source and the receiver of the phosphate group, which changes whether the pump "likes" sodium or potassium.
What molecule provides energy to perform life functions?
There is no 'part' of a molecule as such. But the molecule which is used to store and transport energy in the short term within cells and organisms is Adenosine Triphosphate (ATP). ATP is broken down into one molecule of inorganic phosphate and a molecule of adenosine diphosphate (ADP), the energy released from this bond is captured and used to drive most cellular processes. On a larger scale, some form of carbohydrate or triglyceride is used to generate the ATP in the first place (i.e. glucose, glycogen, etc.) depending upon you particular species and needs at the time.
What combines with glucose during resperation?
The first atom to join with glucose is phosphorus, donated by ATP, and is the first step of glycolysis. Glucose becomes Glucose 6-phosphate. Next it's rearranged to form Fructose 6-phosphate. After it's been broken down to pyruvic acid and further down into an acetyl group, it's joined to coenzyme A, forming acetyl coenzyme A
Which step happens first in DNA replications?
The first thing that happens is a replication structure binds to the DNA molecule. This is usually a signalling molecule or some type of protein. Next, this replication structure attracts DNA helicase enzymes which "unzip" the double stranded helix.
What are the steps of glucose?
Glucose is broken down in the first stage of respiration- glycolysis where it is phosphorylated by a molecule of ATP to form 1-6 glucose phosphate. It is then isomerised ti
What is the first stage of glycolisis?
Glucose is converted into Glucose 6 phosphate. One ATP molecule is used.
How does the molecule ATP store and release energy?
ATP is, on its own, a rather unstable molecule. Because of this, the conversion to a more stable molecule releases energy that can be used by other parts of the cell.
How is ATP resynthesised?
First ATP is broken down by breaking the bond between the third and second bond between the phosphate groups in ATP. Forming a phosphate and ADP. These are then rejoined. This for example, occurs during chemiosmosis, in photosynthesis, forming again ATP.
Energy is released for cells to use when the bond between two phosphate molecules is broken in a sugar molecule true or false?
Partially false. Energy is released when phosphate group in ATP is broken apart. This is because there is high energy stored in the bonds as the attached phosphate groups both have a negative charge.
What is the first molecule broken down in the cytoplasm during respiration?
Glucose is the molecule.One ATP is used.
The process of glycogen to glucose?
Glycogen is a highly branched polymeric structure containing glucose as the basic monomer. First individual glucose molecules are hydrolyzed from the chain, followed by the addition of a phosphate group at C-1. In the next step the phosphate is moved to the C-6 position to give glucose 6-phosphate, a cross road compound. Glucose-6-phosphate is the first step of the glycolysis pathway if glycogen is the carbohydrate source and further energy is needed. If energy is not immediately needed, the glucose-6-phosphate is converted to glucose for distribution in the blood to various cells such as brain cells.
How much ATP energy is invested in glycolysis?
2 ATP molecules are invested during glycolysis per each glucose molecule that is being metabolized. The first ATP molecule intervenes in the very first step, that is: from glucose to glucose 6-phosphate, catalyzed by a hexokinase, releasing an ADP molecule. The second ATP molecule is used in the third step: from fructose 6 phosphate to fructose 1,6-bisphosphate, catalyzed by a phosphofructokinase, and releasing also an ADP molecule.
What is the chemical difference between PGA and PGAL?
PGAL (more commonly G3P) is what is created from PGA through the first steps of the Calvin Cycle of photosynthesis. A phosphate is added to PGA by ATP and a proton is added to PGA by NADPH. Then the phosphate is released and the resulting molecule is PGAL.
What takes place in first phase of cellular respiration?
A glucose molecule is broken down.Two pyruvate,2 ATP,2NADH are produced.
How does ADP get recharged?
ADP is generated when the ATP molecule attempts to create energy and loses a phosphate group resulting in an ADP moleculle. You can remember this by Adenosine TRIphosphate(3 phosphate groups) and Adenosine DIphosphate(2 phosphate groups)
IF ATP is vital to the sodium potassium pump how?
First, the pump is open to the inside of the cell. It naturally "likes"* the sodium (and "dislikes" potassium) so it attracts sodium ions. An ATP molecule then gives one of its phosphate groups to the pump, causing the pump to change. That ATP molecule is now and ADP molecule. With the addition of the phosphate group, the pump now "dislikes" sodium and "likes" potassium. So it closes and reopens to the outside of the cell, releasing the sodium. It attracts potassium ions. Next, the pump gives its phosphate group back to the ADP molecule. That ADP molecule is now an ATP molecule again. Without the phosphate group, the pump "likes" sodium and "dislikes" potassium again. So it closes and reopens to the inside of the cell, releasing the potassium into the cell. The pump now attracts sodium ions. The cycle starts again. For every three sodium ions released, two potassium ions enter. *"Likes" or "dislikes" refer the pump having a higher or lower affinity (attraction) for one of the two elements. To answer your question, the ATP molecule is the source and the receiver of the phosphate group, which changes whether the pump "likes" sodium or potassium.
