organ systems which are responsible for excretion: The respiratory system helps to excrete carbon dioxide‚ water‚ and other gases when we breathe. The integumentary system also excretes some water in addition to inorganic salts‚ lactic acid‚ and urea in the sweat. The digestive system not only eliminates food residue (which is not a process of excretion) but also excretes water‚ salts‚ carbon dioxide‚ lipids‚ bile pigments‚ and cholesterol. The urinary system‚ we will place most of our emphasis
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Homeostasis: The process of the body maintaining a constant internal environment‚ despite any external changes. Homeostasis ensures that the following are kept the same: Body temperature Amount of water in our body Blood glucose levels Breathing rate Heart rate How are things kept the same? 1. Receptors: They detect a change in the things such as temperature 2. Processing: Centre receives information and coordinates a response 3. Effects: Produce a response that ensures our body temperature stays
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people live in the rural areas and associated with the agricultural activities. Some major fertilizer production units are playing an important role in fulfilling the demand of fertilizer. Some major kinds of inorganic fertilizers (DAP‚ CAN‚ NP‚ UREA) are being used in the production of major crops on a large scale. Inorganic fertilizer increases the growth of crops. Secondary data is used for this study. In this study it is found that some major inorganic fertilizers are used to import from
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For my final project the first compound I synthesized was Dulcin. Dulcin is an artificial sweetening agent that is 200 times as sweet as sucrose. It is also‚ the second synthetic sweeter that was discovered. The first synthetic sweetener‚ saccharin‚ was discovered five years prior to Dulcin. The discovery of Dulcin occurred in 1883. Approximately seven years after it’s discovery‚ J.D. Reidel‚ of Berlin‚ was able to synthesis Dulcin at a reasonable cost. Once it became possible to synthesis at a reasonable
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Abstract In this experiment‚ 4-(4-chlorophenyl)-3‚4-dihydropyrimidine-2-one is synthesized in a solvent-free reaction‚ where urea‚ ethyl acetoacetate‚ 4-chlorobenzaldehyde are used as the reactants and p-toluenesulfonic acid is used as the catalyst. This reaction is similar to the original synthesis of DHPM by Pietro Bignelli‚ as it incorporates a single step. Due to its environmentally friendly conditions‚ such as the use of solar energy as a heat source and the lack of solvent‚ this synthesis of
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plasma membrane with a higher lipid content is less permeable to water; however‚ it (more readily) allows transport of lipid soluble molecules. ___ 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Urea molecules are too large (molecular weight of Urea is 60.07 g/mol) to pass through the 20 MWCO membrane. The results of the experiment correlated with my prediction. 3. Describe the results of the attempts to diffuse
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This project is based on ‘The Excretory System’. It has vital information such: What it is‚ the functions‚ what makes it up‚ the importance of the system in physical activity and what happens if the system does not work. It contains diagrams‚ pictures and even interesting facts. Enjoy! Acknowlegement We would like to thank the Lord for providing us with the ability to put together this project. We would like to our parents for helping us to gather and put all this information together
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functions. You can survive for a few weeks without excreting waste products in the urine‚ but hour by hour‚ the other functions are more important. UREA Urea is a waste product of amino acid metabolism. Remember‚ proteins are made of amino acids‚ so when you break down proteins‚ you break down amino acids‚ and the waste product left over is urea. This is the main waste product in urine. COLOR OF URINE When you urinate‚ it should be mostly clear with almost no yellow color. The more yellow the
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Animation: Cells & Chemistry Glycolysis After viewing the animation‚ answer these questions. 1. Cells derive energy from the oxydation of nutrients‚ such as glucose . 2. The oxidation of glucose to pyruvate occurs through a series of steps called glycolsis . 3. How many carbons are in a molecule of glucose? 6 4. The energy related during these oxydation reactions is used to form adenosine triphosphate (
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rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the 20 MWCO membrane because it does not ionize. 3. Describe the results of the attempts to diffuse
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