Enzymes Ashley Njeru Mrs. Booth Tuesday‚ March 19th 2013 SBI 4U INTRODUCTION: The cellular activity of all organisms is controlled through the use of enzymes. An enzyme is a special type of biological molecule‚ usually a protein‚ which speeds up a chemical reaction; most are soluble in water or a dilute salt solution. There are about 4000 different enzymes in a typical living cell. If even one of these enzymes is missing or
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BIOLOGY LAB REPORT (UNIT 7: ENZYMES) GENERAL Enzymes are protein that acts as catalyst‚ lowering the activation energy need for reactions to progress in cells. The reaction can still occur without the presence of the enzyme‚ but at a much slower rate. The activation energy is the minimum amount of energy need for a chemical reaction to occur‚ yielding from a given set of reactants. In enzymatic reactions‚ we have substrates which are reactants of reaction bound to an enzyme. While an active site is
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desirable traits (Anemone‚ 2011). There are two types of adaptations‚ biological adaptation and cultural adaptation. Biological adaptations have to do with our genetics and cultural adaptations are those made by physical objects such as housing‚ clothing‚ and tools. Biological adaptations are traits that get passed on to different generations through natural selection (Anemone‚ 2011). We can look at skin color as apart of biological adaptations and the absorption of UV rays and vitamin D. We get vitamin
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Lab: Tuesdays at 1pm Enzyme Kinetics Lab Introduction: Enzymes are proteins that will catalyze reactions to make the rate of the reaction occur faster than it would without. It can also make the reaction occur in the first place. Tyrosinase is an enzyme that has a variety of functions and activities. It produces pigments like melanin and others that would be apparent when a fruit is cut in half and it browns. (Bien-etre 3).There is that one function that stands out and the enzyme is continuously studied
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The psychologist taking the biological approach would respond with an explanation of how the brain may be deficient in a certain area. He/she may suggest that there is a chemical imbalance in the brain causing the irrational actions displayed by the criminal. There may be any number of chemicals in the brain that could be off and affecting reactions in the nervous system all the way into the parasympathetic and sympathetic nervous system. Additionally‚ the psychologist may attribute genetic markers
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Biological Psychology Biological Psychology The brain is a complex organ that is composed of many even more complex systems. Several theorists and psychologists focus on these systems and the functions of the brain. Scientists are also among those who take an interest in the functions of the brain. Each group digs deeper into researching biological psychology because they are learning more about the history of the field‚ the theorists that have contributed to the understanding‚ and relationships
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STRESS AND HEALTH: Psychological‚ Behavioral‚ and Biological Determinants This article from the US National Library of Medicine National Institutes of Health is quite reputable and covers numerous aspects dealing with stress. This cite discusses the effects of stress on the human body‚ beginning with childhood and into adulthood. Additionally‚ it elaborates on the consequences of stress that may deal with smoking‚ substance abuse‚ as well as accidents‚ sleeping problems‚ and eating disorders
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24 November 2014 I. Title Effect of Differing pH‚ Temperature‚ and Enzyme Concentration on Catalase Reaction Rate II. Introduction Enzymes are used to increase the rate of specific reactions in the body. Catalase‚ a specific enzyme‚ speeds the breakdown of hydrogen peroxide‚ a toxic chemical produced by cells in the body‚ into water and oxygen (Cain and others‚ 2010). The oxygen can be observed as bubbles coming from the reaction site. Catalase is found in many living tissues of organisms‚ including chicken liver
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Title: Catalase enzyme detection Objective: To understand the function of catalase in cells that produce the enzyme‚ interpret the results of a catalase test and know their value in differentiating bacteria. Materials: 1 clean microscopic slide‚ 3% H2O2 solution‚ swabs. Micrococcus luteus‚ Enterococcus faecalis‚ patient G Procedure: 1) Scrape some cells off from each bateria to the slant and place them on glass slide. 2) Place one or two drops of H2O2. Watch for bubbling as an indication of
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have a huge impact on the communication between cells. Cell communication is a crucial process necessary for cells to carry out various functions. Drugs such as Methylenedioxymethamphetamine (MDMA)‚ known as ecstasy‚ can create barriers or confusion to cells. Cell to cell communication carry messages from signaling cells to target cells. Usually a cell will bind with a target cell through a receptor protein in the plasma membrane of the target cell
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