Provide specific evidence from Model 1 to support your answer. Pyruvate is at a lower point than glucose in Model 1, and four ATP molecules are made as PGAL is converted to pyruvate, so pyruvate has less potential energy than glucose.
- 1 Which stores more potential energy one molecule of glucose or two molecules of pyruvate?
- 2 How much potential energy does a molecule of glucose have?
- 3 What has the most potential energy in glycolysis?
- 4 Which has more potential energy one molecule of glucose?
- 5 What molecules carry these high potential energy?
- 6 Which has more potential energy water or glucose?
- 7 How many pyruvate molecules are made from each glucose molecule?
- 8 Is pyruvate a reducing agent?
- 9 What happens to the pyruvate that is produced via glycolysis?
- 10 Where is the energy in a glucose molecule?
- 11 Why do stronger bonds have lower potential energy?
- 12 Which molecule has a higher potential energy ADP or ATP?
- 13 Does glucose have more energy than ATP?
- 14 Why does glucose have potential energy?
- 15 Is glucose a high energy molecule?
- 16 How does glucose become pyruvate?
- 17 Why are 2 ATP used in glycolysis?
- 18 What occurs in pyruvate oxidation?
- 19 Why is there a net gain of 2 ATP molecules during glycolysis?
- 20 Where does pyruvate oxidation occur?
- 21 What two molecules are given off as a by product of cellular respiration?
- 22 What has more potential energy?
- 23 Are compounds and molecules the same?
- 24 Is heat potential energy?
- 25 How does the free energy in pyruvate compare to glucose?
- 26 What is the role of pyruvate in cellular respiration?
- 27 What is pyruvate processing?
- 28 Is pyruvate oxidized or reduced to acetyl CoA?
- 29 How do glucose molecules provide energy?
- 30 Is pyruvate a substrate or product in cellular respiration?
- 31 What happens to glucose molecules during the process of glycolysis?
- 32 What type of energy is glucose molecule?
- 33 Where does the difference in energy stored in glucose compared to the products go when the molecule is broken down?
- 34 Is glucose the same as energy?
- 35 Which bond has least potential energy?
- 36 Which bond contains the most potential energy?
- 37 When the reactants contain more potential energy than products?
- 38 Why does ADP have less potential energy than ATP?
- 39 How do you know if a molecule has high potential energy?
- 40 Why does ADP have less energy?
- 41 Which molecule has the most potential energy?
- 42 Why is being reduced equivalent to having a greater potential energy?
- 43 Why is ATP better suited to provide the energy for cellular activities than glucose?
- 44 Why does glucose have more potential energy than water?
- 45 What are higher energy compound molecules?
- 46 Where do plants get the energy to make glucose?
- 47 How many molecules of pyruvate are produced in glycolysis?
- 48 What is the potential metabolic fate of pyruvate under aerobic conditions?
- 49 How many molecules of pyruvic acid are produced when a single glucose molecule undergoes glycolysis?
- 50 Is there a difference between one glucose molecule and two pyruvate molecules?
- 51 How does glucose become pyruvate?
- 52 What happens to the pyruvate that is produced via glycolysis?
- 53 What is the net gain of ATP during the conversion of glucose to pyruvate?
- 54 Is glucose used in pyruvate oxidation?
Which stores more potential energy one molecule of glucose or two molecules of pyruvate?
One molecule of glucose stores more potential energy than one molecule of pyruvate because in glycolysis, some potential energy of the original glucose molecule is shared between 2 NADH and 2 ATP molecules.
How much potential energy does a molecule of glucose have?
Part 2: Converting Carbohydrates into Usable Energy. A molecule of glucose stores about 3,000 kJ of chemical energy. Chemical energy is the potential energy stored in the bonds that hold atoms within a molecule together. Everytime you break one of these bonds, that energy is released.
What has the most potential energy in glycolysis?
Answer and Explanation: a) Glucose contains the most potential energy. Considering that G3P, Pyruvic acid, and citric acid are molecules that are synthesized after the…
Which has more potential energy one molecule of glucose?
Glucose has more chemical bonds that can be rearranged through chemical reactions. The rearrangement of some of these bonds releases energy – thus the bonds in glucose contain much more potential energy. CO2 does not have chemical bonds that can be easily rearranged and thus it has very little chemical energy.
What molecules carry these high potential energy?
What molecules carry these high potential energy electrons? NADH and FADH2 carry these high potential energy electrons.
Which has more potential energy water or glucose?
Who has more potential energy: water/glucose? Glucose has more potential energy. Energy is stored in chemical bonds, and there are more bonds in C6H12O6 than in H2O.
How many pyruvate molecules are made from each glucose molecule?
One glucose molecule produces four ATP, two NADH, and two pyruvate molecules during glycolysis.
Is pyruvate a reducing agent?
Pyruvate (oxidizing agent is being reduced (gains electrons) and since NADH is being oxidized, pyruvate is the one being reduced)
What happens to the pyruvate that is produced via glycolysis?
In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into mitochondria, which are the sites of cellular respiration. There, pyruvate will be transformed into an acetyl group that will be picked up and activated by a carrier compound called coenzyme A (CoA).
Where is the energy in a glucose molecule?
Energy is stored in the chemical bonds of the glucose molecules. Once glucose is digested and transported to your cells, a process called cellular respiration releases the stored energy and converts it to energy that your cells can use.
Why do stronger bonds have lower potential energy?
A stronger bond is a lower potential energy configuration, in accord with it being a more stable configuration. A reaction that leads to a stronger bond will release an amount of energy equal to the difference in bond energies as heat.
Which molecule has a higher potential energy ADP or ATP?
Thus, ATP is the higher energy form (the recharged battery) while ADP is the lower energy form (the used battery).
Does glucose have more energy than ATP?
Given that the oxidation of, for example, glucose ( C6H12O6 ) by cellular respiration can produce 38 ATP, it would follow that there is more energy in a molecule of sugar than a molecule of ATP.
Why does glucose have potential energy?
If you’ve heard it said that molecules like glucose have “high-energy” electrons, this is a reference to the relatively high potential energy of the electrons in their C−C and C−H bonds. Quite a bit of energy can be released when electrons in C−C and C−H bonds are shifted to oxygen.
Is glucose a high energy molecule?
If you’ve heard it said that molecules like glucose have “high-energy” electrons, this is a reference to the relatively high potential energy of the electrons in their C−C and C−H bonds. Quite a bit of energy can be released when electrons in C−C and C−H bonds are shifted to oxygen.
How does glucose become pyruvate?
During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation.
Why are 2 ATP used in glycolysis?
The first and third steps of glycolysis are both energetically unfavorable. This means they will require an input of energy in order to continue forward. Per glucose molecule, 1 ATP is required for each of these steps. Therefore, a total of 2 ATP is needed during the energy investment phase of glycolysis.
What occurs in pyruvate oxidation?
Pyruvate oxidation is a biochemical reaction that involves the oxidation of pyruvate to create acetyl CoA. Oxidation is defined as either the loss of electrons or the gaining of oxygen. In this case, pyruvate loses electrons in the process of creating acetyl CoA.
Why is there a net gain of 2 ATP molecules during glycolysis?
The energy to split glucose is provided by two molecules of ATP. As glycolysis proceeds, energy is released, and the energy is used to make four molecules of ATP. As a result, there is a net gain of two ATP molecules during glycolysis.
Where does pyruvate oxidation occur?
Pyruvate is produced by glycolysis in the cytoplasm, but pyruvate oxidation takes place in the mitochondrial matrix (in eukaryotes).
What two molecules are given off as a by product of cellular respiration?
In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts. The three stages of aerobic cellular respiration are glycolysis (an anaerobic process), the Krebs cycle, and oxidative phosphorylation.
What has more potential energy?
Higher objects (with further to fall) have greater potential energy. The heaviest of 2 objects at the same height has the greatest gravitational potential energy.
Are compounds and molecules the same?
Difference between molecules and compounds
Molecules are formed by two or more atoms that are bonded by chemical bondings. Compounds are constructed by two or more elements where the elements are mixed in fixed ratios. Not all molecules can be called compounds.
Is heat potential energy?
Heat energy is actually made up partly of kinetic energy and partly of potential energy. In a solid, for example, it’s the kinetic energy and potential energies of the atoms as they wiggle around.
How does the free energy in pyruvate compare to glucose?
Pyruvate is at a lower point than glucose in Model 1, and four ATP molecules are made as PGAL is converted to pyruvate, so pyruvate has less potential energy than glucose. 6. What is the net production of ATP by glycolysis? Two ATP are needed, four are produced, so the net production of ATP is two.
What is the role of pyruvate in cellular respiration?
What is the role of pyruvate in cellular respiration? Pyruvate, produced by the breakdown of glucose, is needed for the Krebs cycle which is a part of cellular respiration. cycle. amount of ATP, and releases carbon dioxide.
What is pyruvate processing?
Pyruvate processing Each pyruvate is processed to release one molecule of CO2, and the remaining two carbons are used to form the compound acetyl CoA. The oxidation of pyruvate results in more NAD+ being reduced to NADH. Energy use. ATP. ATP.
Is pyruvate oxidized or reduced to acetyl CoA?
One of the most studied oxidation reactions involving pyruvate is a two part reaction involving NAD+ and molecule called co-enzyme A, often abbreviated simply as “CoA”. This reaction oxidizes pyruvate, leads to a loss of one carbon via decarboxylation, and creates a new molecule called acetyl-CoA.
How do glucose molecules provide energy?
Glucose and other food molecules are broken down by controlled stepwise oxidation to provide chemical energy in the form of ATP and NADH.
Is pyruvate a substrate or product in cellular respiration?
Products of Cellular Respiration
During glycolysis, the initial reactants are glucose and 2 molecules of ATP, resulting in the end products of pyruvate, ATP, and NADH. During the transition reaction, the substrate pyruvate leads to the formation of the products CoA, NADH, and CO2.
What happens to glucose molecules during the process of glycolysis?
In most cells glycolysis converts glucose to pyruvate which is subsequently oxidized to carbon dioxide and water by mitochondrial enzymes.
What type of energy is glucose molecule?
A primary role for the glucose molecule is to act as a source of energy; a fuel. Plants and animals use glucose as a soluble, easily distributed form of chemical energy which can be ‘burnt’ in the cytoplasm and mitochondria to release carbon dioxide, water and energy.
Where does the difference in energy stored in glucose compared to the products go when the molecule is broken down?
During this process, the energy stored in glucose is transferred to ATP. Energy is stored in the bonds between the phosphate groups (PO4–) of the ATP molecule. When ATP is broken down into ADP (adenosine diphosphate) and inorganic phosphate, energy is released.
Is glucose the same as energy?
Glucose comes from the Greek word for “sweet.” It’s a type of sugar you get from foods you eat, and your body uses it for energy. As it travels through your bloodstream to your cells, it’s called blood glucose or blood sugar. Insulin is a hormone that moves glucose from your blood into the cells for energy and storage.
Which bond has least potential energy?
Strong bonds have low potential energy and weak bonds have high potential energy.
Which bond contains the most potential energy?
- Bond is an attractive force that holds the molecules together and an ionic bond is a bond that is formed in between ions.
- An ionic bond is strong because of the higher electrostatic force of attraction.
When the reactants contain more potential energy than products?
Energy must be input in order to raise the particles up to the higher energy level. the reactants have more potential energy than the products have. The extra energy is released to the surroundings. In this diagram, the activation energy is signified by the hump in the reaction pathway and is labeled.
Why does ADP have less potential energy than ATP?
ADP has two phosphate groups and therefore has a lower potential energy than ATP, which has three phosphate groups. The result is that the difference in total energy available (ΔH) is negative.
How do you know if a molecule has high potential energy?
https://www.youtube.com/watch?v=vE17nWl97ko
Why does ADP have less energy?
The correct answer: ADP has less potential energy than ATP b. Because ADP has only two phosphate groups.
Which molecule has the most potential energy?
Answer and Explanation: a) Glucose contains the most potential energy.
Why is being reduced equivalent to having a greater potential energy?
Why is being “reduced” equivalent to having a great potential energy? When an atom is reduced, it gains electrons. Energy must be added to remove/pull an electron away from the atom. The more electronegative the atom is, the more energy required to take the electron away.
Why is ATP better suited to provide the energy for cellular activities than glucose?
Why is ATP better suited to provide the energy for cellular activities than glucose? ATP stores just the right amount of energy to power cellular activities. What are the reactants of photosynthesis?
Why does glucose have more potential energy than water?
Who has more potential energy: water/glucose? Glucose has more potential energy. Energy is stored in chemical bonds, and there are more bonds in C6H12O6 than in H2O.
What are higher energy compound molecules?
Stryer states: ATP is often called a high energy compound and its phosphoanhydride bonds are referred to as high-energy bonds. There is nothing special about the bonds themselves. They are high-energy bonds in the sense that free energy is released when they are hydrolyzed, for the reasons given above.
Where do plants get the energy to make glucose?
Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
How many molecules of pyruvate are produced in glycolysis?
1: Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.
What is the potential metabolic fate of pyruvate under aerobic conditions?
Under aerobic conditions, pyruvate can diffuse into mitochondria, where it enters the citric acid cycle and generates reducing equivalents in the form of NADH and FADH2. These reducing equivalents then enter the electron transport chain, leading to the production of 32 ATP per molecule of glucose.
How many molecules of pyruvic acid are produced when a single glucose molecule undergoes glycolysis?
Glycolysis: Glucose ( 6 carbon atoms) is split into 2 molecules of pyruvic acid (3 carbons each). This produces 2 ATP and 2 NADH.
Is there a difference between one glucose molecule and two pyruvate molecules?
Two pyruvate molecules are produced from one molecule of glucose by glycolysis. What determines whether these pyruvates are reduced to lactate (or ethanol) or are oxidized by the TCA (Krebs) cycle? C. Availability of O2 or another outside respiratory electron acceptor allows the use of the TCA cycle.
How does glucose become pyruvate?
During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation.
What happens to the pyruvate that is produced via glycolysis?
In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into mitochondria, which are the sites of cellular respiration. There, pyruvate will be transformed into an acetyl group that will be picked up and activated by a carrier compound called coenzyme A (CoA).
What is the net gain of ATP during the conversion of glucose to pyruvate?
The net ATP gain from one glucose molecule in aerobic respiration is 38 ATP. It includes ATP produced in glycolysis, link reaction, TCA cycle and by oxidative phosphorylation in the electron transport system from oxidising NADH and FADH2, which produces 3 ATP and 2 ATP, respectively.
Is glucose used in pyruvate oxidation?
Glucose is oxidized into 2 molecules of pyruvic acid in an exergonic reaction. Most of the energy is conserved in the high-energy electrons of NADH and in the phosphate bonds of ATP. The Krebs cycle completes the oxidation of organic molecules. It releases the energy that is stored in the 2 molecules of pyruvate.