the food we eat (mainly from carbohydrates and fats) a process called respiration. Respiration is the chemical process whereby energy is obtained from the body of a living organism with or without the use of oxygen. Energy is also essential in the body to enable breathing and take in oxygen. Carbohydrates are broken down into glucose which is soluble in blood (can dissolve in blood). Energy is also needed in the body to circulate blood and tissue fluid throughout the
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measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease in atmospheric pressure or temperature changes. There is a direct relationship between oxygen consumption and Carbon
Free Carbon dioxide Oxygen Temperature
photosynthetic organisms. If the world never had these organisms the world would be a desolate place. There would be no oxygen‚ atmosphere‚ or food. We inhale air unconsciously every day. By taking in air‚ we absorb oxygen and discharge carbon dioxide in the process of generating energy. It is a physiological phenomenon‚ called respiration. Most organisms on earth breathe. Then‚ how is oxygen generated and where does carbon dioxide go? The answer to this is plants. When we breath out carbon dioxide the
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and terrestrial environment. The Order Anura shows the extreme anatomical and physiological diversity. Many frogs use lungs to respire‚ bringing in air through their nares‚ mouth‚ into the trachea and then to the lungs for gas exchange and uptake of oxygen. The skin of many frogs is thin and extremely vascular to allow for gas exchange and thus can live in moist environments and secrete mucous from their skin to avoid desiccation. Cutaneous respiration
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RESPIRATION Syllabus * Define respiration * State the uses of energy in the body of humans * Define aerobic respiration * State the equation for aerobic respiration using symbols * Define anaerobic respiration * State the word equation for anaerobic respiration in muscles during hard exercise * State the balanced equation for anaerobic respiration in muscles (C6H12O6 → 2C3H6O3) and the microorganism yeast (C6H12O6 →2C2H5OH + 2CO2)‚ using symbols * Describe the effect
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breath‚ our body combines the oxygen with fuel to produce energy‚ the source of fuel are food nutrients such as; protein‚ fat‚ carbohydrates‚ i.e. starch and sugar. The body’s most preferrred fuel for exercises‚ e .g. marathon running are; glucose and fat. This process breaks down glucose into lactic acid C3 O6 H3 and energy as follows: C5 H12 O6 2C3 H6 O3 + energy Anaerobic respiration is a stage of cellular respiration that happens in the absence of oxygen. The first step is the breakdown
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Hypotheses Water quality parameters such as pH‚ dissolved oxygen‚ seston‚ water temperature etc. are important variables in the abundance and diversity of benthic macroinvertebrates of the Old Chelsea stream. Therefore‚ it can be hypothesized that pH and dissolved oxygen have a direct correlation on biotic factors within the stream. Furthermore‚ due to the surface water velocity variations of the stream‚ it is hypothesized that water pH and dissolved oxygen interreach variability is statistically significant
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INTRODUCTION/LITERATURE REVIEW THE ERYTHROCYTES A cell that contains haemoglobin and can carry oxygen to the body. Also called a red blood cell (RBC). The reddish colour is due to haemoglobin. Erythrocytes are biconcave in shape which increases the cells surface area and facilitates the diffusion of oxygen and carbon dioxide. This shape is maintained by a cytoskeleton composed of several proteins. Erythrocytes are very flexible and changes shapes
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‘heme’. The ‘heme’ group contains one atom of iron (Fe²+) and it is this iron that the oxygen molecule combines itself to. As there are four of the iron molecules in the haemoglobin this shows that a maximum of four oxygen molecules can be carried by the haemoglobin at anytime. For simplicity the equation of the reaction of haemoglobin and oxygen is written as a single polypeptide ‘heme’ chain reacting with oxygen: O2 + Hb ↔ HbO2 . The reactions of the four subunits occur in a consecutive manner‚ with
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Dissolved oxygen enters water through the air and plant. Dissolved oxygen produce by the atmosphere and the process is called air saturation. The gasses a stable body of water with no stratification‚ dissolved oxygen will remain at 100% air saturation. 100% air saturation means that the water is holding as many dissolved gas molecules as it can in equilibrium. At equilibrium‚ the percentage of each gas in the water would be equivalent to the percentage of that gas in the atmosphere like its partial
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