aim of this experiment was to determine the effect of caffeine on resting body temperature. This has to do with homeostasis‚ which is the maintenance of equilibrium. In other words‚ it is a stable body state. Homeostasis refers to the process of keeping the internal body environment in a steady state‚ when the external environment is changed (Homeostasis 2). Humans are warm-blooded creatures that generate body heat internally and maintain body temperatures at a fairly constant level – about 98.6oF
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nature of peer pressure perceive by adolescent‚ Brown‚ B.Bradford‚ et al (1896)‚states that 373 students in grades 7-12 were asked to indicate‚ on a 12-item index‚ the degree and direction of peer pressures they perceived from friends and acquaintances‚ and to describe their personal attitudes and behavior in areas corresponding to index items. Analyses revealed that peers were seen as encouraging misconduct less than other types of behavior. Females reported stronger peer pressure than males toward
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Name: ________________________________ Date: __________________________ Lab Partner: _____________________________________________________________________ Investigating Factors that Affect the Rate of Enzyme Activity See Textbook Pg 61. Enzymes are very large complex organic molecules that are synthesized by the cell to perform specific functions. These biological catalysts are important because they speed up the rate of the reaction that would otherwise be too
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LAB 10: NAME: DaeNia La Rodé DATE: 25TH January‚ 2011. FORM CLASS: L6 3 SUBJECT: Biology TITLE: Enzymes AIM: To investigate the effect of substrate concentration on the enzyme amylase INTRODUCTION: Enzymes are perhaps one of the most important proteins of the human body. Enzymes such as amylase‚ an enzyme that breaks down carbohydrates‚ work by means of surface catalysis. In other words‚ the surface of the enzyme enables other molecules to react in a manner they would not be able to without
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have been an ongoing environmental problem for our ocean waters wildlife. Red tide is a phenomenon caused by harmful algal blooms that occur when colonies of algae (simple plants that live in the sea and freshwater) grow so numerous that they discolor coastal waters (resulting in the name “red tide”). These large algal blooms of toxic producing dinoflagellates (single-celled organisms that are able to form nutritional organic substances from inorganic substances) may diminish oxygen in the waters‚ block
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the sea ice in the Arctic would ever cease to exist‚ today the trends in melting sea ice are conclusive‚ and the leading cause of polar bears being at risk. In the past thirty years‚ mean world surface temperatures have increased 0.2°C per decade. However‚ in some parts of the Arctic‚ temperatures have increased ten times the rate (Hansen et al‚ 2006). Since the late 1970s there have been major reductions in summer sea ice extent‚ decreases in the extent and age of multiyear ice and thickness‚ and
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discuss the current size of the population‚ how does it effect the economic development‚ the impact on the standard of living and also focus on population growth as the contemporary concern by highlighting the past and present trends. However other arguments will be presented‚ such as theories that support the fact that population growth has an impact in economic development. According to Weeks‚ J (1999:13) the rapid acceleration in growth after 1950 was due almost entirely to the declines in the
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Antioxidant Effects on Reactive Oxygen Species Abstract Antioxidants are among key molecules for a healthy living. Antioxidants are molecules that prevent damage of cells through inhibition of oxidizing agents such as free radicals. This experiment was aimed at investigating the role of antioxidant on the inhibition of reactive oxygen species. To demonstrate this‚ quercetin was used as antioxidant and its effect on reactive oxygen species examined. RAW 264.7
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ENVIRONMENTAL ISSUES IN CONDUCT OF WAR INTRODUCTION ‘‘War is never an isolated act.” War is a phenomenon of organized violent conflict‚ typified by extreme aggression‚ societal disruption and adaptation‚ and high mortality. Usually a war is a pre-planned activity to begin with by one group or one nation and the group initiates the war by means of violence against the other. The primary feature of this behaviour pattern is a certain state of organized conflict that is engaged in between two or
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An investigation into the effects of temperature on enzyme action An enzyme is a biological catalyst that speeds up the rate of reaction in certain biological functions. They play a vital role in many aspects of human physiology and are necessary for the functioning of a number of systems‚ for example in the digestive system to help to break down food. All enzymes have a unique active site that can fit on to a particular molecular arrangement on a target substrate; a substance e.g. carbohydrate
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