The Effect Salt Water Has On Radish Plant Growth By: Collins Azubuike
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Microbiology (Lab Report) Closed system growth curve Closed System Growth Curve Lab Report PURPOSE Bacteria grown in a closed system show a specific growth pattern called the growth curve which consists of four phases. The lag phase‚ which is a period of slow growth; exponential phase‚ period of maximum growth; stationary phase‚ where nutrients become the limiting factor making the growth rate equal to the death rate and the death phase where organisms die faster than they are replaced. It
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Nupoor Matieda October 10‚ 2014 PD 9/10 Lab Report Separation of a Mixture of Sand and Salt Goal(s): To separate a mixture of sand and salt and to find the percent of each component by mass of each mixture Background Theory: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Mixtures can be separated by physical processes such as filtration and evaporation. Filtration is a process where solids
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learns to adapt to the unfamiliar nutrient-filled environment it is placed. The second phase is called the log phase. During the log phase‚ the bacteria experiences exponential growth. Nutrients are metabolised at maximum speed until all of the nutrients are entirely consumed. At this point‚ the bacteria starts to limit growth. The third phase is the stationary phase and is a result of depleted nutrients. This is the phase where the bacteria ceases its metabolic activities. The final phase is simply
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The purpose of this lab was to model the significant differences in density that oceans experience when glaciers and polar ice caps melt. It demonstrated that the variation in density greatly affects salt water. I discovered that the increase in freshwater causes a decrease in density. I made three claims. First‚ the higher the salinity of the water is‚ the denser it will be. This was shown in my data by the fact that‚ with 0mL of fresh water‚ the density was 1.108 g/mL For every milliliter of fresh
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– Separating Sand & Salt Purpose: The purpose of this experiment is to separate a mixture of sand and salt. Materials: Small beaker Electric balance Sand Salt Water Graduated cylinder Stirring rod Filter paper Flask Rubber policeman Wash bottle Funnel Bunsen burner complete with rubber tubing and a source of gas Hot hands Insulator pad Ring stand complete with a ring Wire gauze Striker Pre-lab Questions: 1. Water will be useful in separating the salt and sand because salt is soluble in water‚
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Let’s Make Salt Purpose: Could NaCl be made using NaHCO3‚ hydrochloric acid‚ and a boiling chip? Hypothesis: If I combined NaHCO3‚ hydrochloric acid‚ and a boiling chip I think it will form NaCl because when you balance the equation it makes a new chemical reaction. Materials needed: test tube cleaner‚ test tube‚ test tube tongs‚ hot plate‚ a scale‚ graduated cylinder‚ water‚ goggles‚ fire retardant glove‚ beaker‚ test tube holder‚ a scoopula‚ hydrochloric acid‚ sodium bicarbonate‚ soap‚ pipette
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conducted to accumulate data on the growth of Escherichia coli (E. coli) and to monitor how it grows under certain conditions. It has been demonstrated that the levels of glucose and dissolved oxygen were found to affect the rate of growth of E. coli proportionally with a lack of oxygen resulting in the lowering of the pH. In this experiment the growth of E. coli was studied at constant temperature (37 0C) at which it grows ideally. Experimental results for the growth of Escherichia coli showed good
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Effects of Music on Bacterial Growth Kira Lewitt and Kaitlyn Carroll December 2014 Chemistry 1B Grady High School Table of Contents 1. Introduction 2. Materials/ Method/ Procedure 3. Data/ Observations 4. Discussion of Results 5. Conclusion 6. Practical Application 7. Future Expansion 9. Bibliography Introduction Question: What genre of music affects the growth of bacteria the most
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(Madigan et al.‚ 2015). There are four phases to bacterial cell growth: the lag phase‚ which is a period where bacteria are maturing and adjusting to the environment. During this phase‚ RNA synthesis‚ production of ribosomes‚ enzymes and other molecules occur (Mullenger‚ 1973). This is followed by the exponential
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