what is oxygen deficiet and oxygen debt? explain it.?
400655
Oxygen deficiet is where there is little amount of oxygen in the blood! it is also called hypoxia. it can occur for so many several causes such as impaired breathing or CO poisoning or so on.\noxygen debt is a state of continuous increased breathing even after you stopped an exercise!\nduring exercise your body uses all the oxygen that was stored in the myoglobin of the muscle. during exercise there is increased breathing to compensate the metabolic requirements. after you suddenly stop the exercise your breathing still high for some time then it decrease to normal.. this continuous high breathing is due to oxygen debt.. the body try to get the oxygen which it has taken for the myoglobin back!
1100315
It is carbon dioxide molecules produced devided by oxygen molecules consumed. In humans it is roughly 0.8
1049317
If this is for your GCSE next week I think it's high time you got hold of a textbook and read through the section on cellular respiration as if your very life depended on it, and started regretting all the messing about you did in class when you should have at least been making some bare essential notes on this stuff. Perhaps see if your local library opens sundays if you already lost / burnt your school textbook.\n\nTo be more helpful, in brief:\n\nBreathing DOES NOT = "respiration". That's an old, outdated and confusing term for it that no-one should use any more (we now use "ventilation") .... yeah, i recognise this as something i had on my own GCSE years ago by the way :-)\n\nActual respiration is the act of metabolism, and in a vague sense, "living life" by the cell itself - the using up of raw materials ("food" e.g. glucose, and oxygen) to produce usable or storable energy (e.g. for movement, carrying out chemical reactions) and releasing less energetic waste materials (carbon dioxide, water).\n\nAerobic respiration releases a large amount of energy for each unit (eg molecule) of glucose supplied, as it uses oxygen (for what, don't worry for now, as that's degree-level stuff i still can't properly grasp... it accepts electrons, there you go :-) and allows the byproducts of early glycolysis to undergo conversion to pyruvate and enter the krebs cycle. You get... what was it... 18 molecules of energy-storing ATP out of each glucose molecule when it's involved this way.\n\nAnaerobic respiration is a more basic, primitive form of getting energy from glucose (or similar molecules), where the reaction is pretty much that you take the glucose and split it into two fructose molecules, gaining 2 ATP in the process. That's it. No oxygen required, but some less friendly waste materials e.g. lactic acid are produced. This is mainly used in bacteria, which tend to find themselves in food-rich environments, have very little energy requirement for vigourous life, and few worries about buildup of waste materials .... it is also the reason you die if suffocated, and get pains in your legs if you overexert yourself - the body cells can't make enough energy from their limited glucose supplies to survive without using the krebs cycle, and the mass build up of lactic acid in oxygen-starved muscles is very damaging.\n\nThere you go hows that for a textbook answer. That'll be a bag of fizzy cola bottles please. Mmmmmm.\n(That all came off the top of my head, but ONLY because i've been through that particular bloody mill four times so far - GCSE, A-Level, Biology degree and clinical training)\n\ngood luck
818167
Just answered it in your other post, but perhaps this: Oxidation-reduction is a chemical reaction in which an atom or ion loses electrons to another atom or ion.
172218
Relative oxygen consumption in human beings is usually expressed as VO2.  \n\nThe supply of oxygen is dictated by how often the heart beats, the volume of blood transported by every beat and the amount of oxygen in that blood. It is also dependent on how well the tissue or muscle extracts the oxygen (O2).\nCardiac output is the product of stroke volume and heart rate and is measured in milliliters per minute.  When you multiply this by the difference in oxygen concentration, you have the liters of O2 processed per minute.\n\nhttp://www.preventdisease.com/news/articles/vo2_max_how_fit_athlete.shtml
118751
its where the blood picks up the oxygen.
372603
Its got nothing to do with oxygen, that theories been scientifically disproven. But i dont have another answer, sorry
975044
Every time you exhale, you breathe out most of the air you breathed in. While the air is in your lungs, oxygen travels from air to blood and CO2 from blood to air, in each case moving naturally to where it is less concentrated.\n\nHow long it takes the average oxygen molecule from being absorbed to being breathed out again as part of a carbon dioxide molecule is a really good question - I have no idea if anyone has even calculated it, but we can try.\n\nMost people pass out if their blood oxygen level drops below about 80% - and most people can hold their breath for maybe 4-5 minutes (the record is almost 9 minutes by Houdini, but that's someone trained and a bit freakish). That implies you use 20% of the oxygen in, say, 5 minutes - so it would take 25 minutes to use it all, if that were physically possible.\n\nBTW, I'm prettty sure it's 8-9 pints of blood. The normal O2 reading in arterial blood is around 10-13 kPa, but I'd have to admit I don't know how to convert that to a mass (or free volume) of oxygen.\n----\nOoh, here you go: arterial blood contains about 20ml of oxygen per 100cc. Your blood volume is about 5 litres, so that would mean your body contains rather less than a litre of oxygen (because not all of your blood is fully oxygenated).
942341
I think one equation that you should know is moles=mass/mr\n\nThis will make it easy to work out problems of this nature by just rearranging the equation.\n\n15 grams is the mass, find the mr of oxygen from the periodic table and that should get you to the right answer.\n\nHope that helps.
699839
carries oxygen around the body
1076434
Aerobic respiration.\n\nThe key is the "presense of oxygen" part.  Burning sugars in the absense of oxygen is anaerobic respiration.\n\nPhotosynthesis is definately wrong.  That's the capture of photons to boost low-energy electrons for the purpose of making energy, and sugar.
108088
The Hydroxide ion has a negative 1 charge due to the fact that the over all ion has an extra electron.\n\nOxygen needs two additional electrons to fill its octet.  Bonding with the Hydrogen provides Oxygen with one, the other electron is picked up from somewhere else to make the over all ion have a charge.
615100
the same elements except that \n-the ammount of CO2 inceases to 4%(not certain about the value)\n-the oxygen ammount decreeases to 16%\n-the water vapour ammount also increases
835422
Hydrogen, H2O one of mans greatest needs\n\nFor more go to :\nhttp://en.wikipedia.org/wiki/Oxygen
915464
In the alveoli the exchange is simply the difference in concentraions, diffusion.  The high concentration of oxygen in the lungs and low concentration of oxygen from the pulmonary artery (the opposite for CO2) follow the laws of diffusion.  In muscle cells CO2 is released by the muscle in combination with water to form H2CO3, an acid, as well as lactic acid.  The acidic environment results in what is called a Bohr shift, which decreases the affinity of oxygen to the hemoglobin to which it is attached.  This way the cells in the body can get oxygen on demand: cells with a higher metabolism get priority over cells with lower metabolism.\n\nSide note:\nCarbon monoxide prevents hemoglobin from releasing its oxygen creating an anoxic state.
813754
O2, N2 and CO2.\n\nDon't understand the last part
689790
O2 debt is when O2 is deficient an a system....like in the skeletal muscles....\n\nO2 is present in the muscles when its not being used or relaxed. when a muscle is contracting it uses the O2 to burn Sugar and produce energy in the form of ATP. \n\nwhen a mucle is used too much the O2 reserves run out and there is an O2 debt. \n\nthe O2 debt can be removed by relaxing the muscle and breathing