Christy Chan (5) BIOLOGY LAB REPORT Investigation of the effect of metal ions on enzyme activity Objective To study the effect of two heavy metal ions‚ lead (II) ions and silver ions on the enzyme activity of invertase. Introduction Hypothesis: The rate of enzyme reaction of invertase decreases and the reaction eventually stops as the heavy metal ions inhibit the enzyme reactions. Biological principle: Heavy metal ions are non-competitive inhibitors. They do not compete with the substrates
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had a great power to take lives of Jewish people. Today‚ similarly to Hitler’s reason‚ there is a problem called smuggling of people. Generally‚ people who are smuggled are from either Africa or Middle East‚ they were never European. Smuggling still exists because superior races think that they can employ them illegally. Second‚ in aspect of inferior people‚ there is a fear of superior ones. Being a criminal race produces that kind of fear. As Russell (1998‚ p.124) mentions Wilson’s thesis about black
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Behavior Diagrams Definition: Behavioral models describe the internal dynamic aspects of an information system that supports the business processes in an organization. During analysis‚ behavioral models describe what the internal logic of the processes is without specifying how the processes are to be implemented. Later‚ in the design and implementation phases‚ the detailed design of the operations contained in the object is fully specified. Use case diagrams are behavior diagrams used to describe
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Venn Diagram Tracy Powell MATH 56 1/25/2015 Lok Man Yang Venn Diagram A Venn diagram is a visual tool to help students organize complex information in a visual way. The Venn diagram comes from a branch of mathematics called a set theory. John Venn developed them in 1891 to show the relationship between sets. The information is normally presented in linear text and students make the diagram to organize the information. It makes it easier when there is a lot of information‚ because with linear text
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Why Energy Drinks Are Really Unhealthy: Some Dangers of Drinking Energy Drinks Why Energy Drinks Are Really Unhealthy: Some Dangers of Drinking Energy Drinks A lot of people drink energy drinks now‚ especially young people and teenagers. Adults drink Red Bull and Monsters too explaining it that strong coffee doesn’t help them. Of course‚ people feel good when they drink energy drinks. Energy drinks have become popular among students in preparation for exams‚ office workers
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exchange of positive and negative ions between reacting solutions of two ionic compounds. Thus‚ in this example the precipitate must be either silver chloride‚ AgCl or sodium nitrate‚ NaNO3. Sodium nitrate dissolves readily in water and is therefore soluble. Thus we can conclude that silver chloride is the insoluble precipitate. We can represent the formation of this precipitate by a net ionic equation: Ag+ +NO3 ̄ +Na++Cl ̄→AgCl+NO3 ̄+Na+ Net: Ag+ (aq)+Cl ̄ (aq)→AgCl(s) Ions present in the solution but
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epidemic occurring all around the world today. Many children from democratic countries develop an overall idea of what slavery is and that it has a negative connotation. So why does slavery still exist? Do the owners of slaves not understand ethics and do they not notice the psychologic and sociologic effects that resulted from the use of slaves? One of the biggest determinants of our choices and decisions in life is if something is ethical or not. Ethics is
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centuries because they want peace. Citizens often question the government on why their opinions have not been accurately represented or why they have to act against their will‚ and there is only one answer to these questions‚ according to Henry David Thoreau‚ “people have chosen [the government] to execute their will” (Jacobus 305)‚ yet they neglect the fact that the government is often abused and perverted. Unjust laws exist because of an inefficient and corrupted government. Historical events‚ as
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Ion Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the
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Question 1 Characteristics of bad systems To be useful‚ the information system must possess the characteristic of reliability‚ relevance‚ understandability‚ complete‚ accurate and comparability. However‚ in order for Encik Khalid to detect problems occur with the current or new system are based on the characteristics of bad system which are unreliable‚ irrelevance‚ not understandable‚ incomplete‚ inaccurate‚ and incomparable. The first characteristic is unreliable. Encik Khalid may detect the
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