what kind of metabolic wastes does the body produce?
111622
Homework huh?\n\nIt is really not cool to expect other people to do your homework for you. Not only is it dishonest and lazy, it doesn't help you learn anything.\n\nDo you wish to live your life as a brainless bimbo because "science is hard" <giggle>?\n\nTry looking for the answers yourself and then come back if you need help with anything you don't understand. Don't just type out your homework question verbatim.
502388
A metabolite is any molecule that is produced in a metabolic pathway carried out in living cells, starting with a particular substrate and driven by some number of enzymes essential to completion of the pathway.  For example, the complete metabolism of the glucose molecule is driven by a large number of critical enzymes and coenzymes that produce a number of metabolites in the pathway leading to the end products, water, carbon dioxide, and ATP (the cell's chemical "money").\n\nWhen you speak of metabolite 1 and metabolite 2 you are probably referring to primary and secondary metabolites.  Primary metabolites are molecules that are essential to the normal growth, development, and reproduction of the organism.  Secondary metabolites may also have important functions, but are not necessarily essential.  Examples of secondary metabolites are pigment molecules in plants and animals and the substances produced by various fungi that act as antibiotics.\n\nAll of the biochemical reactions that take place in living cells make up the cell's metabolism.  In some pathways, described as catabolic, large molecules are subdivided into smaller ones, usually with the release of energy stored in the large molecule (e.g. glucose).  In other pathways, called anabolic, smaller molecules are combined to form larger ones (e.g. the formation of functional proteins from a directed sequence of their constituent amino acids.\n\nAll chemicals that enter the human body as drugs or environmental contaminants are by definition not strictly necessary for the normal function of the body.  Such chemicals may have direct effects on the body's normal physiology without any metabolic conversion.  The most familiar example of such a chemical might be ethanol, the effects of which are known to anyone who's ever taken a drink.  Other drugs and chemicals may also have direct active effects.  On the other hand, many drugs and chemicals must be converted into an active form before they can have a  physiological effect.  For example, the carcinogen vinyl chloride must be converted into chloroethylene oxide and chloroacetaldehyde, which have the capacity to bind to and alter nuclear DNA, for the carcinogenic effect to occur.\n\nConversion of "foreign" parent molecules into active or inactive metabolites takes place in primarily in the liver.  Liver cells contain a vast array of enzyme systems which have apparently evolved with our species to protect us from the harmful effects of potentially toxic chemicals in our food and in the general environment.  The primary effect of these enzyme systems, such as the cytochrome P450 system, is to convert potentially toxic chemicals into relatively harmless metabolites, which are then frequently conjugated with another molecule, such as glucuronic acid, making it easier for the body to excrete the metabolites via the urine.  Again, sometimes the metabolites produced by one of these enzyme systems may be more toxic than the parent molecule; or the parent molecule given as a medication does not become active until it has been processed by a liver enzyme system.  Ethanol is another example here; one of its metabolites, acetaldehyde, is more toxic than the parent alcohol molecule.  Usually acetaldehyde is rapidly converted to carbon dioxide in water; many East Asian people are deficient in the enzymes needed to process acetaldehyde, and so have a much more limited tolerance for alcohol than non-Asians.\n\nOne final note:  it is usually the products of metabolism of  many drugs that may be detected in a person's urine.  This is true for most illicit drugs and also for tobacco.  Each drug produces a characteristic metabolite or metabolites that are present in the urine for some period of time after ingestion of the drug.
1120574
Basically the body derives energy by stripping electrons off the food you eat and using those electrons to generate a tiny electrical charge to run the tiny electric pumps that keep you alive and moving. Animal cells are essentially just tiny electrochemical motors.\n\nThe catch is that those stripped electrons have to go somewhere, they have to be moved to a lower energy state and disposed of in order to derive that energy. Oxygen is ideal for disposing of electrons because it is extremely electron hungry. It will accept electrons from almost anything. Because of that electron affinity we can take the electrons we strip off food run them down to a very low energy state, sucking almost all the energy from them, and then we can dump them onto oxygen which still accepts them. In comparison other elements are pretty lousy electron acceptors. Once the electrons cease being very high energy those other compounds simply won’t accept them. As a result running anaerobically requires that the electrons be disposed of while they still have a lot of energy in them, so the organism gets less usable energy for each calorie eaten.\n\nYou might compare it to a battery recycler. One place will accept batteries for disposal that are totally dead and another will only accept batteries if they have a few hours life left in them. Obviously the place that will accept the dead batteries will be more efficient to use. Oxygen vs. other electron acceptors is very much like that. Oxygen allows us to suck every last little bit of juice out of our food, other electron acceptors require us to discard the food with quite a bit of potentially usable juice left.
960201
As our bodies perform strenuous exercise, we begin to breathe faster as we attempt to shuttle more oxygen to our working muscles. The body prefers to generate most of its energy using aerobic methods, meaning with oxygen. Some circumstances, however, --such as evading the historical saber tooth tiger or lifting heavy weights--require energy production faster than our bodies can adequately deliver oxygen. In those cases, the working muscles generate energy anaerobically. This energy comes from glucose through a process called glycolysis, in which glucose is broken down or metabolized into a substance called pyruvate through a series of steps. When the body has plenty of oxygen, pyruvate is shuttled to an aerobic pathway to be further broken down for more energy. But when oxygen is limited, the body temporarily converts pyruvate into a substance called lactate, which allows glucose breakdown--and thus energy production--to continue. The working muscle cells can continue this type of anaerobic energy production at high rates for one to three minutes, during which time lactate can accumulate to high levels.\n\nA side effect of high lactate levels is an increase in the acidity of the muscle cells, along with disruptions of other metabolites. The same metabolic pathways that permit the breakdown of glucose to energy perform poorly in this acidic environment. On the surface, it seems counterproductive that a working muscle would produce something that would slow its capacity for more work. In reality, this is a natural defense mechanism for the body; it prevents permanent damage during extreme exertion by slowing the key systems needed to maintain muscle contraction. Once the body slows down, oxygen becomes available and lactate reverts back to pyruvate, allowing continued aerobic metabolism and energy for the body’s recovery from the strenuous event.\n\nContrary to popular opinion, lactate or, as it is often called, lactic acid buildup is not responsible for the muscle soreness felt in the days following strenuous exercise. Rather, the production of lactate and other metabolites during extreme exertion results in the burning sensation often felt in active muscles, though which exact metabolites are involved remains unclear. This often painful sensation also gets us to stop overworking the body, thus forcing a recovery period in which the body clears the lactate and other metabolites.\n\nResearchers who have examined lactate levels right after exercise found little correlation with the level of muscle soreness felt a few days later. This delayed-onset muscle soreness, or DOMS as it is called by exercise physiologists, is characterized by sometimes severe muscle tenderness as well as loss of strength and range of motion, usually reaching a peak 24 to 72 hours after the extreme exercise event.\n\nThough the precise cause of DOMS is still unknown, most research points to actual muscle cell damage and an elevated release of various metabolites into the tissue surrounding the muscle cells. These responses to extreme exercise result in an inflammatory-repair response, leading to swelling and soreness that peaks a day or two after the event and resolves a few days later, depending on the severity of the damage. In fact, the type of muscle contraction appears to be a key factor in the development of DOMS. When a muscle lengthens against a load--imagine your flexed arms attempting to catch a thousand pound weight--the muscle contraction is said to be eccentric. In other words, the muscle is actively contracting, attempting to shorten its length, but it is failing. These eccentric contractions have been shown to result in more muscle cell damage than is seen with typical concentric contractions, in which a muscle successfully shortens during contraction against a load. Thus, exercises that involve many eccentric contractions, such as downhill running, will result in the most severe DOMS, even without any noticeable burning sensations in the
962900
The main mechanism of energy production in the body is through the formation and oxidation of adenosine triphosphate, ATP.  Cells convert carbohydrates (which we eat) into ATP, and then oxidize the molecules later to access the energy in their chemical bonds.
395260
All body processes require energy to run properly. When the body is expending more energy than it is taking in (e.g. when exercising), body cells rely on internally stored energy sources, like complex carbohydrates and fats, for energy. The first source the body turns to is glycogen, which is a complex carbohydrate created by the body. When that source is nearly depleted, the body begins lipolysis, the metabolism of fat for energy. In this process, fats, obtained from fat cells, are broken down into glycerol and fatty acids, which can be used to make energy. The primary by-products of metabolism are carbon dioxide and water; carbon dioxide is expelled through the respiratory system.\n\nFats are also secreted by the sebaceous glands (in the skin).
429048
Carbon dioxide and other wastes. WHOA the second answerer is definitely going to win the voting.
401779
Our body uses amino acids in many ways. When an amino acid is degraded (e.g. phenylalanine to acetyl CoA) ammonia (NH3) is released as a byproduct. Ammonia itself is highly toxic to the human body, however, so we incorporate it into the less toxic urea molecule. Urea has pretty much no other role other than being a nitrogenous waste, and is a component of urine.
852691
nutrition in biochemistry consists of assimilation, digestion excreation ,absorption.
1184529
The solids that come out as feces come out of the end of the alimentary canal, which is one long tube from your mouth to your butt, so poop is basically everything you ate but couldn't digest.  Urine is a filtrate of the blood and is not directly connected to the intestines.  It is where much of the waste that the cells produce and dump into the blood is filtered and excreted, instead of just being left overs from meals like feces is.
510682
urea is a waste product that is excreted in sweat to eliminate it from the body
288380
i assume "respiration" in your context refer to cellular respiration..\n\ncellular respiration in simple terms breaks down glucose and produce energy in forms of adenosine triphosphates.(ATPs). ATPs are the energy currency in the body and the breakdown of ATPs provide the energy needed for other metabolic processes, including digestion. Looking at it another way, digestion of complex nutrients like carbohydrates produces glucose, which is the respiratory substrate..\n\nDiffusion - oxygen required for aerobic respiration enters individual cells by diffusion. Waste products of aerobic respiration such as co2 leave the cells by diffusion into the bloodstream.  in general, diffusion is a passive process which does not require energy from ATPs, be it facilitated diffusion or simple diffusion, both are exergonic processes.\n\nthe circulatory system would carry the materials needed for aerobic respiration, eg oxygen and glucose to the individual cells, oxygen in form of oxyhaemoglobin in red blood cells. The circulatory system also carries the waste products, eg co2 away for excretion. \nThe circulatory system requires the pump, i.e. the heart to work, and the cardiac muscles require ATPs from respiration for contraction.\n\nhope u can see that they are all interrelated now..=)
170937
A lot, actually. The kidney and the small and large intestines are the most well-known ones. But your skin actually does it's share of excreting waste from your body too. And so do your lungs. Carbon dioxide is a waste product after all.
1133954
your body is just disposing of what it doesnt need.
996133
http://en.wikipedia.org/wiki/Metabolism
490845
the pancreas stops producing insulin which is necessary to get the sugar in the blood stream into the cells where it can be used.  Thus the liver starts to break down the bodies fat and do gluconeogenesis.
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The liver puts some compounds into the bile, which is dumped into the gut and excreted in the stool.\n\nThe lungs exhale things that can go into gas phase from the blood stream into the alveoli--like the sulfenic acid derivatives that make garlic and onions cause your breath to smell wretched.\n\nSkin does its excretion by putting material into your sweat.\n\nNote that the liver, the kidneys, the skin and even body fat also metabolically modify things (chemically alter them), which not only deactivates them (or in some cases, activates them) but also makes them more easily excreted by the liver or the kidney, which are the primary systems that get rid of such things.\n\nThat help?