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What is the role of the electron transport chain in either mitochondria or chloroplasts?
In oxidation process an electron/electrons aretransferredfrom the elements, who have extra of them in there outer orbit to those who have less in there outer orbit. This way both of them get, what they want and stable molecule is produced.So when sodium or potassium burns in oxygen, then this is called oxidation. When they burn in, say in chlorine then again this is called as oxidation. In oxidation process energy is released and more the energy released per 'moles' ofparticipants more stable the compound is formed. In biological oxidation oxidation of glucose occurs in about 22 steps.(At few times reduction also.) So little energy istransferredto another taker molecule in each step. This system of 'taking' energy is about 40 % effective only and rest is converted into heat energy. This 40 % energy is also going to get converted into heat energy after use of energy in various metabolic processes. So in chemical burning there is 'sudden' transfer of electron giving energy in 'one stroke'. Net energy is equal in both. Not a photon more or less. Obviously in photosynthesis in chloroplast there is step wise 'reduction' in electron transport 'chain' of carbon bi oxide and water molecules to form glucose molecule. Energy is consumed in the form of 'Light' falling on the chloroplast. This is 'exactly' same as much released during oxidation of glucose molecule. (Law of conservation of chemical energy.)
What else can I help you with?
Do all cells have the same number of mitochondria and chloroplasts?
No, prokaryotic cells have none of either.
Where is oxygen consumed in cellular respiration?
Oxygen is consumed in the electron transport chain of cellular respiration, specifically during the process of oxidative phosphorylation where it serves as the final electron acceptor. This occurs in the inner mitochondrial membrane where electrons are transferred through a series of protein complexes, ultimately generating ATP.
In which orgenelle of a living cell DNA found?
In prokaryotes, the cytoplasm contains the DNA. In eukaryotes, there are several (either two or three) organelles that contain DNA: the nucleus, the mitochondria, and in plants and algae the chloroplasts also.
How many times is chloroplast larger than mitochondria?
This is a relatively complicated question as the exact origins of mitochondria and how they came to be included in eukaryotic cells is still under investigation and therefore open to debate.Everyone seems to agree though, that they originally come from bacterium and that they were assimilated into eukaryotic cells either because they were useful or through some form of symbiosis.As mitochondria are common to both plant and animal cells it could therefore be argued that they shared a common ancestor at some point in evolution.The inclusion of the chloroplast came later, and a separate line of mitochondrial and chloroplast carrying cells evolved - eventually becoming plants. The line without the chloroplast becoming animals.
Similarities between photophosphorylation and oxidative photophosphorylation?
The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.
Do all cells have the same number of mitochondria and chloroplasts?
No, prokaryotic cells have none of either.
Can chloroplasts make Glucose at night?
Chloroplasts must capture the sunlight during the day and make it into Glucose, STARCH, or store it in the mitochondria as ATP energy. After this happens they will then rely on the mitochondria for glucose at night. Either way, the plant must have energy at all times. Hence why it is stored in the mitochondria.
What is the site of energy production in a plant or animal cell?
In plant cells, the site of energy production is the chloroplasts, where photosynthesis occurs. In animal cells, the site of energy production is the mitochondria, where cellular respiration takes place.
Where is oxygen consumed in cellular respiration?
Oxygen is consumed in the electron transport chain of cellular respiration, specifically during the process of oxidative phosphorylation where it serves as the final electron acceptor. This occurs in the inner mitochondrial membrane where electrons are transferred through a series of protein complexes, ultimately generating ATP.
In which orgenelle of a living cell DNA found?
In prokaryotes, the cytoplasm contains the DNA. In eukaryotes, there are several (either two or three) organelles that contain DNA: the nucleus, the mitochondria, and in plants and algae the chloroplasts also.
Are mitochondria in either plant or animal cells?
mitochondria
Where do H ions build up in as electrons pass down the electron transport chain?
H+ ions build up in the intermembrane space of the mitochondria as electrons pass down the electron transport chain. This forms an electrochemical gradient that drives ATP production through ATP synthase.
Order of cellular respiration?
Cellular respiration involves glycolysis, the Krebs cycle, and oxidative phosphorylation. Glycolysis breaks down glucose into pyruvate, which then enters the Krebs cycle to produce more energy in the form of ATP. Finally, oxidative phosphorylation occurs in the mitochondria and involves the electron transport chain to produce the majority of ATP through the process of chemiosmosis.
The oxygen consumed during cellular respiration is involved in what process?
Oxygen consumed during cellular respiration is involved in the electron transport chain; it is the final electron acceptor (this is also what makes it either aerobic or anaerobic respiration).
How many times is chloroplast larger than mitochondria?
This is a relatively complicated question as the exact origins of mitochondria and how they came to be included in eukaryotic cells is still under investigation and therefore open to debate.Everyone seems to agree though, that they originally come from bacterium and that they were assimilated into eukaryotic cells either because they were useful or through some form of symbiosis.As mitochondria are common to both plant and animal cells it could therefore be argued that they shared a common ancestor at some point in evolution.The inclusion of the chloroplast came later, and a separate line of mitochondrial and chloroplast carrying cells evolved - eventually becoming plants. The line without the chloroplast becoming animals.
Where does the process of photosynthesis begin and end in a cell?
Cellular respiration begins with the transportation of glycolysis into the mitochondria. The final step of cellular respiration will either be fermentation or an electron transport chain depending on whether it is anaerobic or aerobic respiration.
Similarities between photophosphorylation and oxidative photophosphorylation?
The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.
