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What are the five stages of respiration?
The electron transport chain is the third stage of cellular respiration. Steps 1 and 2 are: glycolysis and the Kreb's Cycle.
The four stages are glycolysis, oxidation of pyruvate, the Krebs cycle, and the electron transport chain.
The three stages of cellular respiration are glycolysis, the Krebs Cycle, and the electron transport chain. The first stage happens in the cytoplasm while the last two occ…urs in the mitochondria.
The fourth and final stage of aerobic respiration is the electronic transport chain. This is where the proteins NADH and FADH give their electrons in order to make ADP.
1. Glycolysis: Glycolysis involves the breaking down of glucose molecules from carbohydrates into molecules of pyruvate, which will continue on to the Krebs Cycle. T…his process occurs in the cytosol of the cell and can proceed regardless of the presence of oxygen. In the first stage of glycolysis, energy is actually used to phosphorylate the 6-carbon glucose molecule. This means that a phosphate is taken from ATP (which becomes ADP) and added to the glucose molecule. This addition of phosphate makes the molecule much more chemically reactive. The position of the glucose molecule is changed, so that it becomes its isomer, fructose. An enzyme then cuts the molecule apart, producing two 3-carbon molecules of pyruvate. Through several more steps, catalyzed by several different enzymes, the phosphate groups are removed and these pyruvate molecules are ready to enter the Krebs Cycle. The reactions of glycolysis produces a net gain of 2 ATP molecules, as well as a release of 2 water molecules and 2 NADH molecules (these are another type of energy-rich molecule) 2. The Krebs Cycle: As pyruvate is being shuttled from the cytosol to the interior of the mitochondrion, a microenzyme removes one carbon and two oxygens from each molecule, producing Aceytl CoA. This two-carbon sugar that actually enters the Krebs Cycle. The Krebs Cycle is a series of steps, catalyzed by enzymes, which completely oxidize the Aceytl CoA molecule. The Krebs Cycle is an aerobic process, meaning it needs oxygen to function. Two complete turns of the Krebs Cycle must occur to produce: 4 carbon dioxide molecules, 6 NADH molecules, 2 ATP molecules and 2 FADH2 molecules (yet another energy-yielding molecule). 3. The Electron Transport Chain: Very little energy has been produced during glycolysis and the Krebs Cycle. Most of the energy locked in the original glucose molecule will be released by the electron transport chain and oxidative phosphorylation. The electron transport chain is a network of electron-carrying located in the inner membrane of the mitochondrion. These proteins transfer electrons from one to another, down the chain, much in the way a bucket brigade passes buckets of water. These electrons will eventually be added, along with protons, to oxygen, which is the final electron acceptor. This produces water, but does not produce any ATP. The ATP is actually produced by a proton motive force. This force is a store of potential energy created by the gradient formed when hydrogens (protons) are moved across a biological membrane. Therefore, the electron transport chain merely produces a gradient through which ATP can be made (this is known as chemiosmosis). The electron transport chain produces the remaining 32-34 ATP.
Glycolysis --> Pyruvate Oxidation --> Krebs Cycle --> Electron Transport Chain
in aerobic respiration there r 3 stages Glycolisis, ATP synthesis, terminal oxidation
Cellular respiration has three main stages: 1. Glycolysis 2. The Citric Acid Cycle 3. Electron Transport Chain
GlycolysisKrebs cycleElectron transport chain
There are 3 processes in aerobic respiration. Glycolysis, Kreb's cycle, and electron transport chain. A very, very simply, the equation for all those processes is Glucose + Ox…ygen = Energy + Carbon Dioxide + Water. But I will describe all these steps a little more detailed for you: Glycolysis: 1- one molecule of glucose is converted into pyruvate 2- pyruvate is converted into acetyl CoA and CO2 3- the acetyl-CoA enters the citric acid cycle (Kreb's Cycle) 4- 2 ATP molecules, 2 water molecules, and 2 NADH molecules are produced. Kreb's Cycle: 5- Acetyl CoA is converted into citrate which then goes through a serious of chemical transformations, losing 2 carboxyl groups as CO2 (it is converted back to acetyl CoA by losing the 2 CO2 molecules which helps the production of citric acid) 6- citric acid is broken down and makes 2 molecules of CO2 7- After 2 complete cycles of the Kreb's cycle, 6 NADH molecules, 2 FADAH2 molecules, 2 ATP molecules, and 4 CO2 molecules are produced. The Electron Transport Chain: 8- H+ electrons from molecules produced in previous steps (H+ removed from NADH, making it NAD+) 9- the H+ are combined with O2 molecules through different membrance transports and the electrical potential between all chemicals is used to generate ATP from ADP+phosphate 10- 32-34 molecules of ATP are produced Overall, 38 molecules of ATP are generated for every molecule of glucose in the aerobic respiration steps. Hope this helps. Sorry if I was unclear at any point.
Glycolysis It is common to both aerobic and anaerobic respiration.It takes place in cytoplasm
aerobic respiration: glycolysis, Krebs cycle, and electron transport chain anaerobic respiration: glycolysis, fermentation (lactic acid or alcohol)
glycolysiskrebs cycleelectron transport system
1 - INSPIRATION the taking in of ambient air (about 20% oxygen) into the lungs for processing 2 - VENTILATION the exchange of oxygen through the alveoli into the blood and car…bon dioxide out from the blood through the alveoli into the lungs for EXPIRATION out of the body 3 - Transporting the inspired and ventilated oxygen through the arterial system to nourish all of the body's cells which is the third and final phase of the respiratory cycle called PERFUSION