Table of Contents
Where would you expect to find electron transport chains in a prokaryote ?\?
In prokaryotes, the electron transport chain components are found in the plasma membrane. As the electrons travel through the chain, they go from a higher to a lower energy level, moving from less electron-hungry to more electron-hungry molecules.
Which step involves the release of carbon dioxide?
Animals, plants and fungi all carry out respiration. Respiration produces carbon dioxide. In respiration, oxygen is used to break apart food molecules. The energy released by this reaction is stored as the chemical ATP.
What are the three principle stages of the respiration of glucose?
Respiration occurs in three metabolic stages: glycolysis, the citric acid cycle, and the electron transport chain and oxidative phosphorylation. Glycolysis occurs in the cytosol. It begins catabolism by breaking glucose into two molecules of pyruvate.
What is the sequence of steps as energy is extracted from glucose during cellular respiration?
Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.
Is the step where electrons are released and gathered by acceptor molecules?
Cellular respiration begins when electrons are transferred from NADH and FADH2—made in glycolysis, the transition reaction, and the Krebs cycle—through a series of chemical reactions to a final inorganic electron acceptor (either oxygen in aerobic respiration or non-oxygen inorganic molecules in anaerobic respiration).
Where would you expect to find the electron transport chain?
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria. Electrons are passed from one member of the transport chain to another in a series of redox reactions.
What are the three stages of cellular respiration?
Summary: the three stages of Aerobic Respiration Carbohydrates are broken down using all three stages of respiration (glycolysis, citric acid cycle and the electron transport chain).
What are the 4 stages of cellular respiration and where do they occur?
The cellular respiration process includes four basic stages or steps: Glycolysis, which occurs in all organisms, prokaryotic and eukaryotic; the bridge reaction, which stets the stage for aerobic respiration; and the Krebs cycle and the electron transport chain, oxygen-dependent pathways that occur in sequence in the Jun 11, 2019.
What are the 4 stages of aerobic respiration?
Aerobic respiration is a series of enzyme-controlled reactions that release the energy stored up in carbohydrates and lipids during photosynthesis and make it available to living organisms. There are four stages: glycolysis, the link reaction, the Krebs cycle and oxidative phosphorylation.
Where do the 3 steps take place in eukaryotes?
Cellular respiration occurs in both eukaryotic and prokaryotic cells, with most reactions taking place in the cytoplasm of prokaryotes and in the mitochondria of eukaryotes. There are three main stages of cellular respiration: glycolysis, the citric acid cycle, and electron transport/oxidative phosphorylation.
Which of the following are the stages of respiration in correct order?
breathing, gaseous transport, tissue respiration and cellular respiration.
What is the correct order of stages of cellular respiration?
Thus the correct order of the stages in cellular respiration is: Glycolysis – Oxidative decarboxylation – Krebs cycle – Electron transport chain – Oxidative phosphorylation.
What is the correct sequence of glucose breakdown during glycolysis?
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. The specific form of glucose used in glycolysis is glucose 6-phosphate.
Which of the following is the correct sequence acetyl CoA formation?
The correct answer is c. glycolysis, formation of acetyl CoA, citric acid cycle, electron transport chain. Glycolysis converts glucose (six carbons).
What becomes of the energy extracted during cellular respiration?
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body’s cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
How many steps are in the electron transport chain?
30-32 ATPs and 44 moles of H2O Stage Direct products (net) Ultimate ATP yield (net) Glycolysis 2 ATP 2 ATP 2 NADH 3-5 ATP Pyruvate oxidation 2 NADH 5 ATP Citric acid cycle 2 ATP/GTP 2 ATP.
What do electron acceptors do?
An electron acceptor is a chemical entity that accepts electrons transferred to it from another compound. It is an oxidizing agent that, by virtue of its accepting electrons, is itself reduced in the process. This phenomenon gives rise to the wide field of Lewis acid-base chemistry.
What is the final electron acceptor during respiration?
In cellular respiration, oxygen is the final electron acceptor. Oxygen accepts the electrons after they have passed through the electron transport chain and ATPase, the enzyme responsible for creating high-energy ATP molecules.
Where do the protons come from in the electron transport chain?
In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water. The electron transport chain (Figure 1) is the last component of aerobic respiration and is the only part of glucose metabolism that uses atmospheric oxygen.
What process occurs in the matrix of the mitochondria?
The matrix is a gel-like material in the mitochondrion, or organelle that performs the process of aerobic respiration, that contains ribosomes resembling those of bacteria. It contains the mitochondrion’s DNA, which also resembles that of bacteria.
What are the complexes in electron transport chain?
The ETC proteins in a general order are complex I, complex II, coenzyme Q, complex III, cytochrome C, and complex IV.
What are the 3 stages of anaerobic respiration?
This process occurs in three stages: glycolysis , the Krebs cycle , and electron transport . The latter two stages require oxygen, making cellular respiration an aerobic process.
What are the two stages of respiration?
Stages of Cellular Respiration Glycolysis occurs in the cytosol of the cell and does not require oxygen, whereas the Krebs cycle and electron transport occur in the mitochondria and do require oxygen.
Which process occurs in the cytoplasm?
Most cellular activities take place within the cytoplasm, such as many metabolic pathways including glycolysis, and processes such as cell division. Movement of calcium ions in and out of the cytoplasm is a signaling activity for metabolic processes.
What are the 4 steps of cellular respiration quizlet?
Terms in this set (4) 1st- Glycolosis. Splitting sugars in cytoplasm, energy investment phase -> 2 ATP molecules combine with glucose molecule. 2nd- Oxidation. Pyruvates moving into mitochondria, through oxidation pyruvates broken into water. 3rd- Krebs Cycle/Citric Acid Cycle. 4th- Electron Transport Chain.
