Final Electron Acceptor in Aerobic Respiration
The electron acceptor can be oxygen in aerobic bacteria but a variety of other electron acceptors organic and inorganic are also used by various species. The series of reactions is typically shorter in anaerobic respiration and uses a final electron acceptor such as sulfate nitrate sulfur or fumarate instead of oxygen.
What Is The Terminal Electron Acceptor In Aerobic Cellular Respiration Quora
The oxygen is the final electron acceptor of what is known as the electron transport chain found in the last stage oxidative phosphorylation of aerobic cellular respiration.
. In facultatively aerobic species two respiration products can be excreted by the same eubacterium depending on physiological and ecological conditions. The terms aerobic respiration anaerobic respiration and fermentation substrate-level phosphorylation do not refer to primary nutritional groups but simply reflect the different use of possible electron acceptors in particular organisms such as O 2 in aerobic respiration or nitrate NO 3 sulfate SO 2. In this reaction lactic acid replaces oxygen as the final electron acceptor.
Anaerobic respiration also produces less ATP for each sugar molecule digested than aerobic respiration making it a less efficient method of generating cellular energy. Aerobes obtain some of their energy from glycolysis but they get most of the energy through aerobic respiration via the Krebs cycle and oxidative phosphorylation. The energy produced by the oxidation of these compounds is enough for ATP production.
Oxygen provides a force to drive the transport of electrons down the chain. Methanogenic bacteria are one such type of organisms that use carbon dioxide as the final electron acceptor in the absence of. _____ is the final electron acceptor comping with a pair of hydrogen ions to form _____.
Aerobes require molecular oxygen as a terminal electron acceptor so cannot. Anaerobic respiration occurs in most cells of the body when oxygen is limited or mitochondria are absent or nonfunctional. For anaerobic respiration NO 3 SO 4 2 CO 2 or fumarate can serve as terminal electron acceptors rather than O 2 depending on the.
The final electron acceptor is not the molecular oxygen as in aerobic respiration. Chemolithotrophs use the above-mentioned inorganic compounds for aerobic or anaerobic respiration. In aerobic respiration molecular O 2 serves as the terminal acceptor of electrons.
Respiration takes place when any organic compound usually carbohydrate is oxidized completely to CO 2 and H 2 O. Different types of organisms use different types of final electron acceptors. Aerobes grow in ambient air which contains 21 oxygen and a small amount of 003 carbon dioxide.
Cytochrome electron-transport pathways are used in these reductions which are called respiration The pathways used with oxygen are the same as those used with nitrate. For example because erythrocytes red blood cells lack mitochondria they must produce their ATP from anaerobic respiration. Final exam study guide for Biology 103 Principles of Biology Learn with flashcards games and more for free.
These can be sulfate ions nitrate ions or carbon dioxide. Per molecule of glucose aerobic respiration generates a total of _____ ATP molecules while anaerobic generates _____ ATP.
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