Aim:The aim of this practical is to investigate the effect of exercise on heart rate and breathing rate. We will use a digital heart rate monitor strapped on our chest while we perform different levels of exercise. A digital watch is also provided which receives signals from the heart rate monitor and displays your current heart rate on the screen. To measure the breathing rate at different levels of exercise‚ we measure the breathing rate before physical activity by counting the number of breaths
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Your heart speeds up to pump extra food and oxygen to the muscles. Breathing speeds up to get more oxygen and to get rid of more carbon dioxide. When a fit person‚ such as an athlete‚ exercises the pulse rate‚ breathing rate and lactic acid levels rise much less‚ than they do in an unfit person. As the exercise intensity increases so do the heart and respiratory rates to supply oxygen to the working muscles at a faster rate so they can keep up‚ few athletes have perfected this to a point where they
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small molecules such as porphyrins (see below). These complexes are themselves bound within proteins (metalloproteins) which provide a local environment that is essential for their function‚ which is either to transport or store diatomic molecule (oxygen or nitric oxide)‚ to transfer electrons in oxidation-reduction processes‚ or to catalyze a chemical reaction. The most common of these utilize complexes of Fe and Mg‚ but other micronutrient metals including Cu‚ Mn‚ Mo‚ Ni‚ Se‚ and Zn are also important
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photosynthesis rate from volume of oxygen produced per gram leaf per minute to mol CO2 fixed per area of leaf (in m2) per second. B. Why would one want to express photosynthesis rate as µmol CO2 m-2 s-1? What is the advantage. Answers: A. How to convert photosynthesis rate from volume of oxygen produced per gram leaf per minute to mol CO2 fixed per area of leaf (in m2) per second. Photosynthesis rate can be measured either by seeing how much oxygen is produced by a leaf‚ or how much
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mitochondria‚ the biochemical reaction‚ respiration takes place. The balanced formula for respiration is C6H12O6 + 6 H2O à 6 H2O + 6 O2 + E‚ the catalyst being enzymes. Respiration is when oxygen is consumed as a reactant along with the organic fuel. In order for the process take place‚ food must be available‚ along with oxygen. The first two stages occur due to glycolysis and the Kreb’s Cycle. These processes decompose glucose and other organic fuels. Glycolysis‚ which occurs in the cytosol‚ begins breaking
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nitrate concentration and nitrite concentration were still below the limit‚ which were 10 mg/l and 1 mg/l for nitrates and nitrites respectively. Nitrification occurred in the water in the pH range of 8 to 9 at temperature range of 20 -25 oC‚ Dissolve oxygen and suitable bacteria. Therefore‚ the concentration of nitrite will be increased though nitrification. The ammonia‚ also below the acceptable limit of 0.5 mg/l‚ however it is not suitable for drinking because drinking solution contain ammonia cause
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Cellular respiration a process in which sugar and oxygen are used to produce adenosine triphosphate (ATP)‚ water‚ and carbon dioxide. The chemical equation for this reaction is C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (ATP). Cellular respiration occurs in 4 steps: Glycolysis‚ the preparatory reaction‚ the Krebs Cycle‚ and the oxidative phosphorylation. Glycolysis occurs in the cytoplasm of the cell‚ in this process glucose is broken into two 3 Carbon molecules called pyruvates. The preparatory reaction
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Introduction Like many other water plants‚ Cabomba has specialised tissue called aerenchyma that allows gases to diffuse inside the plant. Aerenchyma provide buoyancy and allows oxygen transport to the submerged roots that may otherwise be in hypoxic (low oxygen) conditions. If you cut through the aerenchyma‚ oxygen can escape. This can be made use of this in the classroom to show how the rate of photosynthesis is affected by light intensity or by the colour of light reaching the plant. Don’t
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pigment that collects lights‚ consumes radiant energy from the sun. Therefore‚ this energy is then used to separate water molecules into hydrogen and oxygen atoms. Then‚ oxygen is released into the atmosphere. While‚ hydrogen and carbon dioxide collected from the plant are then transformed
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profile Received: 20 September 2002 / Revised: 3 December 2002 / Accepted: 6 December 2002 / Published online: 26 February 2003 Springer-Verlag 2003 Abstract In this study‚ the advantage of a novel measuring device for the online determination of oxygen and carbon dioxide transfer rates in shaking-flasks is reported for glucose oxidation by Gluconobacter oxydans. In this fermentation process‚ this device was used for the characterization of the oxidation pattern of different strains. G. oxydans
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