- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Effect of Substrate Concentration on Catalase Aim: An experiment to find out how the concentration of hydrogen peroxide affects the rate of reaction of the enzyme catalase. Background Information: Enzymes such as catalase are globular protein molecules with catalytic properties. A catalyst is a substrate which can alter the rate of reaction without itself undergoing any permanent change. As they are not changed
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The negative effects of cell phones With the increasing popularity of cell phones comes many adverse effects not only on a social level but also on our health. Many of us can’t imagine a day without our cell phone but by Are we losing the ability to communicate face to face? How tragic it is to hear bout accidents caused by talking and texting while driving. We are easily convinced that we need new phones with new features but neglect the fact that the old phones that we dispose
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Beta adrenergic receptor antagonists (Beta Blockers) For several years‚ CHF treatment involved drugs with sympathomimetic properties. This was based on the belief that heart failure is fundamentally a disorder of reduced stroke volume and cardiac output. Long-term use of sympathomimetics was expected to improve clinical outcomes based on relief obtained from short term use of dopamine and dobutamine. Under this model‚ the use of beta adrenergic receptor antagonists was believed to be counterintuitive;
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A2 Practical Investigations Title: The effect of Temperature on the growth of Aspergillus oryzae Develop a Hypothesis This particular investigation is to discover how a range of temperatures effects the growth rate of the fungi Aspergillus oryzae. Most fungi’s tend to survive within the temperature range of 5-35oC‚ with the optimum depending on their normal environmental temperature. The fungi Aspergillus oryzae is heterotrophic which means they taken in their food from dead organic matter and cannot
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Negative Effects of Cell Phones As the technology of cell phones is increasing rapidly‚ the negative effects on people is growing fast as well . The first effect is being distracted while operating a Vehicle. There are different kinds of distractions for using a cell phone while driving but the common one is visual distraction‚ which is watching a cell phone screen instead of the road and trying to reach to the ring ton. Being a driver requires to have attention on the road but trying
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Beta blockers (β-blockers or BBs) were invented and designed by Sir James Black‚ who was a Nobel Prize winning scientist. Black designed beta blockers to counteract stimulated adrenergic effects. He demonstrated that‚ by blocking the cardiac beta-receptors‚ these agents could cause inhibitory effects on the sinus node (chronotropic effect)‚ atrioventricular node (dromotropic effect)‚ and on myocardial contractility (inotropic effect).1 It is important to note that not all beta receptors (β-receptors)
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The Effects of Cell Phone Use From now on‚ people will rely on phones more and more. A great many reasons lead to Cell Phone Use‚ I just list 3 main reasons. The first reason is that we used most of time going for working in fast-paced modern life‚ So we spent that time easily to watch movies‚ read news‚ chatting‚ and play games by phones‚ not only waiting. The second reason is that we can acquire a great many knowledge from web by phones. The last reason is that phones can bridge gap
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1 Experiment Membrane Transport Objectives ► Referring to energy‚ what two ways can substances enter a cell? What is active transport? What is passive transport? How is osmosis related to diffusion? How can we demonstrate active transport? How can we demonstrate Brownian movement? How can we demonstrate diffusion (2 ways)? How can we demonstrate osmosis (3 ways)? In terms of relationships between substances‚ how can we define “hypertonic”‚ “isotonic”‚ and “hypotonic”? What is the relationship
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Purpose of today’s experiment: To determine the effect osmotic pressure might have on cellular membranes‚ specifically when beet slices are placed in NaCl solutions of varying concentrations. 2. Hypothesis: The osmolarity will directly increase with increasing NaCl concentrations. 3. Control = Distilled Water – this was present in all solutions 4. The independent variable – salinity of the 6 solutions; while predetermined‚ the NaCl concentrations varied from 0% to 15%. The dependent variable
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The effect of cell phones on health! Carrying expensive cell phones in our pocket for pleasure and purposely exposing it in front of our buddy does wonders to our reputation and personality. Everyone adores having a cell phone in this era. Particularly‚ we youngsters set upon moving with cell phones to schools and colleges. It’s good to be a part of assortments of technological world. But the growing technology is likely to threaten the life of people by giving out detrimental radiations. Yes‚
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