waves crash about‚ air is mixed with the water‚ thus increasing oxygen content. This is due to the fact that when waves crash about‚ the water will be more exposed to the air and cause an increase in the amount of oxygen present in the water. When the tide is low and periwinkles are exposed‚ there is no shortage of oxygen for the periwinkle snails either because the surrounding air is composed of around 21% oxygen‚ which is enough oxygen for a periwinkle snail. To survive in conditions that change
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food molecules are oxidized to synthesize ATP used to drive the metabolic reactions necessary to maintain the organism’s physical integrity and to support all its activities. This is achieved by either aerobic (in the presence of oxygen) or anaerobic (in the absence of oxygen) respiration. Aerobic respiration is a more efficient process as up to 30% of the energy in glucose makes its way to ATP whereas only about 2% of the energy available in glucose is usable by the cell through anaerobic respiration
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The Decomposition of Potassium Chlorate Hypothesis: Potassium chlorate decomposes into potassium chloride and oxygen gas‚ which means that when the glowing splint is inserted into the test tube‚ the flame will have enough fuel to fully reignite the splint. When the manganese dioxide is added‚ this will increase the rate of the production of oxygen in the reaction‚ without affecting the state of the manganese oxide. Materials: Test tube Retort stand Bunsen burner Scoopula Flint sparker 2cm of potassium
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environments affect the reactivity of catalase? Hypothesis- If more catalase is added then more oxygen (kPa) will be produced in a faster rate because there is more catalase to react upon. If less catalase is added then less oxygen (kPa) will be produced in a slower rate because there is less catalase to react upon. Variable- Independent- Amount of Catalase (Filter Paper) Dependent- Amount of Oxygen (kPa) Constant- Temperature in Fahrenheit‚ 2 Pipette of Hydrogen Peroxide‚ 0.8 Cm Filter
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keep them clean and moist. The alveoli must stay moist so oxygen can dissolve and then diffuse into the blood. The lungs are also kept moist
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energy is created by making carbohydrates from carbon dioxide and water in the presence of chlorophyll. Plants release large amounts of oxygen into the atmosphere as they produce much more than needed during the photosynthesis process. Aerobic respiration is an important process in life as we know it. This process further breaks down molecules and sugars using oxygen. During this process adenosine triphosphate (ATP) is created‚ used to store and transfer energy to cells throughout the body. (Aerobic
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chemical equation. Example: In this equation‚ A and B are called reactants and C and D are called the products. Arrow shows the direction of chemical reaction. Condition‚ if any‚ is written generally above the arrow. When hydrogen reacts with oxygen‚ it gives water. This reaction can be represented by following chemical equation. In first equation words are used and in second symbols of substances are used to write the chemical equation. For convenience‚ symbol of substance is used to represent
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blood cells) are biconcave disks‚ containing haemoglobin that transports oxygen. They transport the oxygen to cells all over the body. The surface area to volume ratio is very large on the erythrocytes so oxygen can diffuse very quickly into the cell. They lack organelles meaning that there is more room for haemoglobin. They are small and have a flexible membrane which allows them to fit through tiny capillaries and transport oxygen extremely close to cells. Leucocytes (also called white blood cells)
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blood into and out of the lungs (Porth‚ 2011)‚ this leaves Margaret at risk of developing respiratory failure (National Institute of Health‚ 2011). The oedema in Margaret’s alveoli is restricting the flow of oxygen in the blood (Porth‚ 2011). Margaret is having trouble with the exchange of oxygen and carbon dioxide‚ a rise in carbon dioxide in the blood sends signals to the brain to increase breathing and to breathe deeper (Starr‚ Evers & Starr‚ 2010). Margaret is lying on her left side and is
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respiratory system is to supply the body with oxygen and to dispose of carbon dioxide. To do this‚ at least four distinct events‚ collectively called respiration‚ must occur: 1. Pulmonary ventilation Air must move into and out of the lungs so that the gases in the air sacs (alveoli) of the lungs are continuously changed and refreshed. This is commonly called breathing. 2. External respiration Gas exchange (oxygen loading and carbon dioxide unloading)
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