Effect of Temperature on the Rate of Yeast Respiration Abstract Carbon dioxide is a waste product of yeast respiration. A series of experiment was conducted to answer the question; does temperature have an effect on yeast respiration? If the amount of carbon dioxide is directly related to temperature‚ then varying degrees of temperature will result in different rates of respiration in yeast. The experiment will be tested using yeast and sugar at different water temperatures. I predict
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Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to not-so-shiny strips that are stained with dark‚ reddish-brown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after
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Cellular Respiration  Cellular respiration is the process of oxidizing food molecules‚ like glucose‚ to carbon dioxide and water. C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2 The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell. The process occurs in two phases: glycolysis‚ the breakdown of glucose to pyruvic acid the complete oxidation of pyruvic acid to carbon dioxide and water In eukaryotes‚ glycolysis occurs in the cytosol. (Link to
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are organic molecules and capture in their ATP. Some of these organisms need oxygen to do this but not all of them require it. Organic carbon molecules are the energy source‚ and for waste is carbon dioxide (CO2) and water (H2O). CO2 can combine with water to form carbonic acid during cellular respiration. Phenolphthalein can be used to help detect any changes in pH because of production of CO2 during cellular respiration. Phenolphthalein usually appears clear or colorless in acidic solutions‚ and
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A critical point happens when a substance has a high enough temperature and pressure that both liquid and gas can exist at the same time. This state is called a critical point. Now‚ when a state of matter changes from one state to another is called a phase shift. Phase shifts are extremely important and most commonly observe phase shifts daily. For an example‚ when water freezes into ice‚ or the water in the shower turns to steam. To begin to start describing how a phase shift works we must understand
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found within most multi-cellular organisms enabling the growth of these organisms to be greater than those single-cellular organisms. The transport system enables the rapid delivery of nutrients and oxygen as well as the removal of waste products such as carbon dioxide from all the cells within the body in order for them to survive. All cells within the body require the intake of substances from the environment and the removal of any unwanted substances. Within a single-cellular organism this process
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‘Kinetics’ is the study of chemical reactions. The speed of a reaction can vary depending on many variables such as the nature of the reactants‚ particle size‚ concentration and temperature. For a chemical reaction to occur‚ there must be a collision between reactants. The reaction rate is slower when the reactants are large and complex molecules because it takes longer for the molecules to combine together creating a chemical reaction. More than 2000 years ago‚ Democritus‚ who was a philosopher
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reaches too high of heat. If an enzyme has been denatured it means the shape has been altered therefore cannot perform its function‚ many factors can cause this including high heat. The hypothesis is if temperature is increased the amount of activity rate will increase. The results for the rate of oxygen production (dependent variable) will increase as the heat increases. The reason is a chemical reaction to the heat gives it energy. Enzyme reactions are important to life because “Enzymes are proteins
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product. This is different from respiration because respiration transforms chemical energy into energy usable by cells; in this case chemical energy is the source. Photosynthesis occurs in the chloroplasts‚ using the chlorophyll inside of the chloroplasts‚ while respiration occurs in the mitochondria. Photosynthesis produces oxygen as a by-product‚ while aerobic respiration requires oxygen to even work. Photosynthesis produces NADPH2 in its workings‚ while aerobic respiration produces NADH+. Photosynthesis
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How Variations Of 5‚ 10‚ 15‚ 20‚ And 25 Squats Affects the Respiration Rate In 14 Year- Old Year 9 Boys. The human respiratory system is made up of the lungs and the passages that lead to them. Air is breathed into the lungs‚ and oxygen from the air passes into the blood‚ which carries it around the body. The waste product‚ carbon dioxide‚ is then passed from the blood into the lungs and is breathed out. This all happens with the immense help of oxygen‚ to maintain a functional human body. However
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