How will the cell shift its metabolic processes in response to the level of pyruvate and in order to produce ATP? A. It will shift from aerobic respiration to fermentation B. It will shift from aerobic respiration to anaerobic respiration C. It will continue with aerobic metabolism using oxygen in the cytosol to make ATP D. It will shift from anaerobic respiration to fermentation
Electron Transport Chain
The electron transport chain, also known as the electron transport system, is a group of proteins that transfer electrons through a membrane within mitochondria to create a gradient of protons that drives adenosine triphosphate (ATP)synthesis. The cell uses ATP as an energy source for metabolic processes and cellular functions. ETC involves series of reactions that convert redox energy from NADH (nicotinamide adenine dinucleotide (NAD) + hydrogen (H)) and FADH2(flavin adenine dinucleotide (FAD)) oxidation into proton-motive force(PMF), which is then used to synthesize ATP through conformational changes in the ATP synthase complex, a process known as oxidative phosphorylation.
Metabolism
Picture a campfire. It keeps the body warm on a cold night and provides light. To ensure that the fire keeps burning, fuel needs to be added(pieces of wood in this case). When a small piece is added, the fire burns bright for a bit and then dies down unless more wood is added. But, if too many pieces are placed at a time, the fire escalates and burns for a longer time, without actually burning away all the pieces that have been added. Many of them, especially the larger chunks or damp pieces, remain unburnt.
Cellular Respiration
Cellular respiration is the cellular process involved in the generation of adenosine triphosphate (ATP) molecules from the organic nutritional source obtained from the diet. It is a universal process observed in all types of life forms. The glucose (chemical formula C6H12O6) molecules are the preferred raw material for cell respiration as it possesses a simple structure and is highly efficient in nature.
2. How will the cell shift its metabolic processes in response to the level of pyruvate and in order to produce ATP?
A. It will shift from aerobic respiration to fermentation
B. It will shift from aerobic respiration to anaerobic respiration
C. It will continue with aerobic
D. It will shift from anaerobic respiration to fermentation
Aerobic respiration is a chemical process in which oxygen will be used to make energy from sugars. It is also called as aerobic metabolism and cell respiration and oxidative metabolism.
*Anaerobic respiration uses electron acceptors other than oxygen. Though oxygen is not final electron acceptor, the process will uses a respiratory electron transport chain.
*Fermentation is a metabolic process which produces chemical changes in substrates through action of enzymes. Simply it can be defined as extraction of energy from macromolecules.
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