PROCEDURE: Part A (Effect of temperature on growth) 1) 15 tubes of glucose broth are provided and one set of 3 tubes are inoculated with each of the following cultures; Escherichia coli‚ Pseudomonas fluorescens‚ Micrococcus luteus and Saccharomyces cerevisiae. The last served as control. 2) One of the three tube of each culture is incubated at each of the following temperature: * 4°C * 37°C * 55°C 3) All the tubes are incubated within 5 minutes after inoculating. The turbidity
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Discuss the causes and effects of Economic Growth Economic Growth Before discussing the causes and effects of economic growth‚ I will define what economic growth actually is and distinguish between the two types of growth in the economy; actual and potential. On the whole‚ economic growth may be defined as ‘a long-run increase in an economy’s productive capacity and trend output’. The long-run output growth trend an economy achieves is indicated by the path of trend Gross Domestic Profit
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Carbohydrate Substrates. Hypothesis. The hypothesis that I draw is that "" out the five carbohydrate substrates that I will use‚ Glucose will produce the highest volume of Carbon Dioxide at every five-minute interval. Null Hypothesis. The null hypothesis that I am composing is that "" the five carbohydrate substrates that I am to use will not produce any Carbon Dioxide. Scientific Research. Under anaerobic conditions (when Oxygen is unavailable) yeast cells will break down carbohydrate substrates into
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The Effects of Antibiotics on Bacterial Growth Biology II 1996 Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic‚ measuring 1 micron in length. However‚ colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more
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Economic growth The effect of corruption on economic growth has been extensively researched in the last two decades. While not denying that corruption may have played a positive role at particular times in specific countries‚ it leads to lower growth‚ hampering both private and productive government spending in investments and inhibiting the efficiency of public services. Corruption can also affect the growth rate through distortions in tax collection‚ the level of public expenditure and the composition
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“Discuss the Causes and Effects of Economic Growth” Economic Growth is where goods and services maximise in value over a period of time. This is measured by Real Gross Domestic Product (GDP) which is defined as “The total market value of all final goods and services produced in a country….equal to the total consumer‚ investment‚ and government spending‚ plus the value of exports minus the value of imports.”(www.Investorwords.com) In turn this is measured by the level of aggregate demand in the
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enzyme mediated process in which organic compounds such as glucose is broken down into simpler products with the release of energy (Duka‚ Diaz and Villa‚ 2009). It is a series of metabolic processes and oxidation-reduction reactions. Oxidation of substrates‚ such as glucose‚ is a fundamental part of cellular respiration (Mader‚ 2009). As a catabolic process‚ it may or may not require the presence of oxygen. The process that requires oxygen is called aerobic respiration while the process that does not
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The effect of enzyme concentration‚ substrate concentration‚ pH‚ and temperature on the enzyme catalase. Introduction: Enzymes are biological catalysts; proteins and RNA. They are required for most biological reactions and they are highly specific. Each enzyme has an active site. The active site is the spot on the enzyme where a substrate fits in. Substrates binds with enzymes through the active site. Enzymes‚ being highly specific‚ only fit with one certain substrate. Enzymes and substrates
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the two experiments was to determine the fundamental effects that temperature has on the growth and survival of bacteria. During the first experiment five different bacterial broth cultures of Escherichia coli‚ Pseudomonas fluorescens‚ Enterococcus faecalis‚ Bacillus subtilis and Bacillus stearothermophilus were individually incubated at temperatures of 5‚ 25‚ 37‚ 45 and 55°C for one week in an aim to distinguish the effect temperature has on growth and survival of the five different species. After
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Substrate concentration and yeast catalase Aim: To see how the substrate concentration in hydrogen peroxide affects the rate of an enzyme controlled reaction using yeast catalase. Introduction: An enzyme is a biological catalyst made of protein. Enzymes are protein molecules found in living organisms and in this case I will use a yeast catalase. Catalase is an enzyme that catalyzes the reduction of hydrogen peroxide. Hydrogen peroxide is a poisonous by-product of metabolism‚ so it is very
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