where does celluar respiration begin?
918065
the mitochondria...i think
380794
Basically by osmosis. The cell absorbs nutrients and oxygen through the cell wall from the blood circulating in the capillaries. The oxygen is absorbed by the body in an exchange in the lungs and nutrients are absorbed through the small and large intestine and they all travel in the blood stream to the cells.
758329
the equations of cellular respiration and photosynthesis are related because they are the converses of each other. cellular respiration is oxygen and glucose equaling carbon dioxide, water and energy. photosynthesis is when energy, water, and carbon dioxide equal oxygen and glucose. photosynthesis needs cellular respiration and cellular respiration needs photosynthesis.
867974
Oxygen transfers via osmosis through cell walls  from regions of high concentration (ie, the haemoglobin) to the tissue cells where there is a lower concentration. At the same time the tissue cells release carbon dioxide which lowers the partial pressure creating a diffusion gradient for the the oxygen to move along.
1112042
mitochondria is in the cell and is used for anerobic respiration. the cell uses mitochondria for energy (ATP)
148125
Respiration is the process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and ATP (energy). Respiration is commonly confused with breathing, but they are not the same. Respiration takes place on a cellular level whereas breathing is on a different level. Respiration takes place in the mitochondria of the cells and provide the cells with energy.\n\nRespiration also takes place in plants, where they respire the products of photosynthesis - oxygen and glucose to give energy, water and carbon dioxide. The chemical process involved is identical to burning in that oxygen reacts with carbon-based substances releasing energy. Unlike burning, respiration is slower and more controlled.
789131
ATP, NADH, FADH2, AND CO2\nGlycolsis start with glucose synthesis and goes through the Krebb Cycle with beginning of oxidation of Pyruvate,the end result is in the Transport Chain system with C02.
692861
Air enters the lungs and the alveoli will exchange the gases to have the respiration complete.
234289
Cellular respiration is the process of oxidizing food molecules, like glucose, to carbon dioxide and water. The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell.\nThe process occurs in two phases:glycolysis, the breakdown of glucose to pyruvic acid; the complete oxidation of pyruvic acid to carbon dioxide and water.\n\nIn eukaryotes, glycolysis occurs in the cytosol. The remaining processes take place in mitochondria. \n\nsee link.
446417
If you mean cellular respiration, then it would be about 70%.  The majority of the rest is used for neuronal transmission-specifically for maintanence of the ionic gradient.  If you are speaking of merely gross respiration (the movement of air in and out of your lungs) then it would be a very small percentage.
822960
I guess a default answer would be cellular respiration
118751
its where the blood picks up the oxygen.
1130819
when we take in the food during the process of respiration the glucose is broken down to pyruvic acid CH3COC0OH BY THE process of glycolysis , initially by taking oxygen by cytoplasm . when it gets more oxygen the pyruvic acid enters mitochondria and is converted to CO2 AND H20 . This cycle is called KREB's cyle . the synthesis of ATP molecule takes place in the F1 particle of mitochondria . \nthe equaton is \nC6H12O6+O2---->CH3C0COOH + O2--->CO2 + H20 \nthis process is called aerobic trespiration \nrespiration involves oxidation of food ....\nthus kreb cycle is aerobic respiration and increase in oxygen increases it !!!!!\nPLEASE VOTE IT AS THE BEST ANSWER IF YOU LIKE IT ..PLEASE......\nI THINK I HAVE ANSWERED YOUR MANY QUERIES
758805
Respiration is the exchange of waste products produced during metabolism for the molecules necessary to keep metabolism functioning.  In humans, respiration exchanges CO2 and H20 for O2.  In plants, O2 is the waste product, along with water, while CO2 is the compound that is required to drive all of its metabolic reactions.
932813
Well, basically in photosynthesis, it takes in carbon dioxide, water, and sunlight (or energy). Then it is made into glucose. And after the glucose is made, cellular respiration begins. The oxygen in the water is released from the plant into breathable air. Then humans inhale the air and let out carbon dioxide. It is really a neverending process when you think about it.\n\nWhere does the plant get that water?\nWell, when you water your plants, you're giving it the water it needs for photosynthesis and cellular respiration.\n\nWhat is the extra glucose (which is food for the plant and is also known as a type of sugar) stored as?\nThe extra glucose can be stored as starch, if not eaten by the plant.\n\nI hope this has helped you!\n\n-Fulla Questions :)
851635
Respiration happens constantly in many organisms as the main metabolic pathway to provide the cell with ATP (chemical energy).  \n\nThe term respiration also implies that oxygen is needed (this is why your lungs and etc are called the respiratory tract).  Oxygen is the final electron acceptor in the "electron transport chain" of respiration and when it accepts these electrons it forms a water (H2O) molecule\n\nRespiration is coupled with mitochondria in humans and most other eukaryotes.  In humans, mitochondria are used to create a "proton gradient" which drives ATP synthesis in the mitochondria.  Heart cells have many mitochondria for example, and this is because the heart constantly beats and requires energy.  Skeletal Muscle cells also have a decent amount of mitochondria, but when you exercise your muscles and they burn, it is because respiration is going as fast as it can, but since your cells need chemical energy, they have started to use an alternative pathway that produces lactic acid (the burn from exercise).\n\nEven bacteria like e-coli use respiration, though they do not have mitochondria, though often bacteria can live without oxygen and use different metabolic pathways in the absence of oxygen.
964937
Cellular respiration is the process in which the chemical bonds of energy-rich molecules such as glucose are converted into energy usable for life processes. Oxidation of organic material—in a bonfire, for example—is an exothermic reaction that releases a large amount of energy rather quickly. The equation for the oxidation of glucose is:\n\nC6H12O6 + 6O2 → 6CO2 + 6H2O + Energy released (2830 kJ mol−1) \nIn a fire there is a massive uncontrolled release of energy as light and heat. Cellular respiration is the same process but it occurs in gradual steps that result in the conversion of the energy stored in glucose to usable chemical energy in the form of ATP. ATP is known as the universal currency because when the phosphoanhydride bonds in ATP are hydrolyzed in an exergonic reaction, the energy yield is 30kJ per mole under standard conditions. Waste products (CO2 + H2O) are released through exhaled air, sweat and urine.