An investigation to see how much oxygen is given off when different concentrations of catalase are added with hydrogen peroxide. Aim: To see if changing the concentration of catalase (found in celery) with hydrogen peroxide affects the amount of oxygen given of. Background Information: (Hydrogen peroxide - H2O2 1/2O2+H2O) Enzymes: Hundreds of chemical reactions happen simultaneously inside living cells and it’s the job of enzymes to control and regulate the various metabolic
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aluminium at the cathode and oxygen at the anode. 4Al3+ + 12e- 4Al (aluminium metal at the (-) cathode) reduction. 6O2- - 12e- 3O2 (oxygen gas at the (+) anode) oxidation. Aluminium is more dense than the alumina/cryolite solution and so it falls to the bottom of the cell where it can be tapped off as pure liquid metal. The overall reaction is aluminium oxide aluminium + oxygen. 2Al2O3(l) 4Al(l) + 3O2(g) Oxygen is given off at the
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dioxide nitrogen; helium oxygen; nitrogen. oxygen; carbon dioxide Correct nitrogen; hydrogen See Section 49.1: What Physical Factors Govern Respiratory Gas Exchange? Score: 1 of 1 2. Which of the following best explains the limiting effects of water in oxygen exchange? Low diffusion rate and high oxygen content at high water temperatures Low diffusion rate and low oxygen content at high water temperatures Correct High diffusion rate and low oxygen content at low water temperatures
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Oxygen Transport (pp. 830–832; Figs. 22.20–22.21) 1. Because molecular oxygen is poorly soluble in the blood‚ only 1.5% is dissolved in plasma‚ while the remaining 98.5% must be carried on hemoglobin. a. Up to four oxygen molecules can be reversibly bound to a molecule of hemoglobin—one oxygen on each iron. b. The affinity of hemoglobin for oxygen changes with each successive oxygen that is bound or released‚ making oxygen loading and unloading very
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depending on the availability of oxygen and their biological make-up. In many cases the cells are in an oxygen-rich environment. For example‚ as you sit and read this sentence‚ you are breathing in oxygen‚ which is then carried throughout your body by red blood cells. But‚ some cells grow in envi¬ronments without oxygen (yeast in wine-making or the bacteria that cause botulism in canned food)‚ and occasionally animal cells must function without sufficient oxygen (as in running sprints). In this activity
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blood colour took place in the heart rather than in the lungs. He also demonstrated the necessity of fresh air in life rather than air generally and that in fact ’where a fire burns readily there we can easily breathe’. He was close to conceptualizing oxygen here but this had to wait until Priestley’s work or perhaps the research of Lavoisier (1743-1794). However‚ John Mayow (1641-1679) an English chemist had come very
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Determining the Empirical Formula of a Compound: Burning Magnesium Lab Purpose: To experimentally determine the percent composition of a reaction product. Directions: Work in teams of three. The directions for this lab are on a separate sheet of paper at your lab bench. Make sure that everyone in your group understands the process and purpose before you get started. Assign tasks. Everyone in the group will be expected to contribute at the same level of participation‚ and for this experiment
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Lab 5Cellular Respiration Introduction: Cellular respiration is an ATP-producing catabolic process in which the ultimate electron acceptor is an inorganic molecule‚ such as oxygen. It is the release of energy from organic compounds by metabolic chemical oxidation in the mitochondria within each cell. Carbohydrates‚ proteins‚ and fats can all be metabolized as fuel‚ but cellular respiration is most often described as the oxidation of glucose‚ as follows: C6H12O6 + 6O2 → 6CO2 + 6H2O + 686 kilocalories
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The reactants are oxygen and glucose. I know that oxygen is needed for cellular respiration because of lab 9.1. In that lab‚ we found out that 20ml of oxygen for 100ml of blood was going to the cells from the lungs. We also discovered that of the 100ml of blood‚ 15 was going from the cells to the lungs. This shows us that oxygen is necessary for cellular respiration because as the blood went through the body‚ the oxygen level decreased because it was being used up by
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and inadequate breathing‚ maintaining an open airway‚ and providing artificial ventilation. Students will be able to demonstrate basic competency in applying these concepts to appropriate care through the use of airway adjuncts‚ suction equipment‚ oxygen equipment and delivery systems‚ pulse oximetry‚ CPAP‚ and resuscitation devices. They will also understand various types of advanced airway devices‚ including single-lumen airways‚ multilumen airways‚ and supraglottic devices‚ and will learn the steps
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