Action of enzymes as catalysts in biochemical processes * Enzymes acts as catalyst and increase the rate of all the chemical reactions. * Enzymes are also described by two properties like all other catalysts. It composed of two main functions. * The first function is that‚ they increase the rate of chemical reactions by without consumed themselves or undergo any change or alteration in the reaction. . ( Zemitec et‚al 2008). * The second function is‚ they increase reaction rates
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known as the tricarboxylic acid cycle (TCA cycle)‚ the Krebs cycle‚ or the Szent-Györgyi-Krebs cycle‚ [1][2] — is a series of enzyme-catalysed chemical reactions‚ which is of central importance in all living cells that use oxygen as part of cellular respiration. In eukaryotic cells‚ the citric acid cycle occurs in the matrix of the mitochondrion. The components and reactions of the citric acid cycle were established by seminal work from Albert Szent-Györgyi and Hans Krebs. In aerobic organisms‚ the
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The human body is a very complex working system and it requires a lot of energy to function properly. The human body eats food molecules that contain nutrients in order to get the energy needed to function. Once these food molecules are broken down in the human body some of the nutrients are made into glucose‚ which is an energy source. This glucose is not quite usable as one whole thing so our body breaks down even more into other molecules like pyruvate. Eventually the human body needs to make
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sucrose which is isotonic to the cell sap of mango. [F4-Chapter 3] 2007 Q1: To study the effect of light intensity on the rate of photosynthesis of a Hydrilla sp. [F4-Chapter 6] Q2: To study the effect of temperature on the rate of anaerobic respiration in yeast [F4-Chapter 7] 2008 Q1: To investigate the effect of light intensity on the population distribution of Pleurococcus sp. [F4-Chapter 8] Q2: To study the size of molecules that can diffuse through a semi permeable membrane [F4-Chapter
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3-carbon molecules NO O2 - Fermentation 1. Lactic Acid – your muscles ache because of the accumulation of lactic acid. 2. Alcohol Fermentation- ethanol is fancy word for alcohol. Alcohol fermentation is alcohol + CO2 O2 Aerobic * Respiration * Mitochondria * Matrix – Krebs Cycle – C6 – gives you 2 more ATP * Innermembrane- ETS – 34 ATP Mitochondria is only involved in the presence of oxygen. * Must know pyruvate for the test. Glycolysis * Two processes
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two products of the breakdown of glucose: 1. _________________ 2. _________________ If oxygen is not available‚ pyruvic acid is converted to __________ acid‚ which is the end product of _________________ respiration. 8. If oxygen is available‚ the process is known as ______________ respiration. Name two sources of oxygen: 1. _______________________ 2. _______________________ The aerobic pathway consists of glycolysis + ________________ + ___________________. The net result of one glucose molecule
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Question 1 2.5 out of 2.5 points The second law of thermodynamics holds that Answer Selected Answer: energy disperses spontaneously. Correct Answer: energy disperses spontaneously. Question 2 2.5 out of 2.5 points The minimum amount of energy needed to get a chemical reaction started is called the ___ energy. Answer Selected Answer: activation Correct Answer: activation Question 3 2.5 out of 2.5 points What happens to a molecule when it is phosphorylated? Answer Selected
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Cycles in Biology Cycles in biology play a fundamental role in the world that we live in. Cycles occur all around and inside of us in many different forms‚ from the Krebs to the Calvin cycle. There are large scale cycles happening and they are essential in regulating the nutrients and substances that are around us which without‚ life on earth could no function. One of the largest cycles that occurs all around us is in everyday life is the carbon cycle. The current atmospheric
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protons through the inner mitochondrial membrane. The main theory behind chemiosmosis is call Chemiosmosis theory‚ and was developed by Peter Mitchel in 1961. Here is a brief outline of the theory (now pretty much accepted as fact): Throughout respiration carrier molecules (NAD and FAD) are produced‚ which carry electrons. These pass electrons through to a chain of proteins which also act as electron carriers (This whole chain‚ from NAD and FAD to the proteins is called and electron transport chain
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the breakdown of glucose: 1 Two ATP molecules 2.Pyruvic acid If oxygen is not available‚ pyruvic acid is converted to ___lactic_______ acid‚ which is the end product of _________anaerobic________ respiration. 8. If oxygen is available‚ the process is known as ____aerobic__________ respiration. Name two sources of oxygen: 1. The aerobic pathway consists of glycolysis + ________________ + ___________________. The net result of one glucose molecule is ___ ATP. 9. The process of restoring the
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