Griffith’s experiment Griffith’s experiment discovering the "transforming principle" in pneumococcus bacteria. Griffith’s experiment‚ reported in 1928 by Frederick Griffith‚[1] was one of the first experiments suggesting that bacteria are capable of transferring genetic information through a process known as transformation.[2][3] Griffith used two strains of pneumococcus (Streptococcus pneumoniae) bacteria which infect mice – a type III-S (smooth) and type II-R (rough) strain. The III-S strain covers
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Title Antimicrobial properties in different type of plants. Introduction A substance that kills or prevents the growth of microorganisms for example bacteria‚ fungi or protozoans is called an antimicrobial. This substance has 2 major roles which are to either kill microbes (microbiocidal) or prevent the growth of microbes (microbiostatic). Disinfectants are antimicrobial substances used on non-living objects outside the body. This substance included antibiotics‚ antifungals‚ antiprotozoals and
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because there was more mass to pull as more books were added. This shows newtons 1st law because the books wanted to stay at rest‚ but as more force was added they moved. The 2nd law is seen because the more mass there was‚ the more force was required to accelerate the books. The 3rd law is there because as you pull on the spring balance‚ it pushes pulls back on you‚ which lets it move. The eggs connect to the first law because the hard boiled egg is easier Egg 1 mass: 60.6 to start and stop‚ but the
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Experiment 10 - Flow Characteristics of Valves NAME: CHER SUNG KANG GROUP NUMBER: B21 EXPERIMENT NUMBER: 10 DATE OF EXPERIMENT: 28/11/2011 DATE OF REPORT SUBMISSION: 5/11/2011 MARK/20 (for demonstrator use): Introduction Aim: 1. Describe operation of various types of valves 2. Measure frictional losses due to flows through different valves 3. Identify sources of errors Background & theory: In this experiment‚ the relationship between volumetric flow rate and percentages
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Parachute experiment Aim: The aim was to find the effect of holes on a parachute‚ varying their size and number. Hypothesis: 1. By increasing the number of holes‚ the time it will take to the parachute to reach the ground will be longer and its flight will be more balanced. 2. By increasing the size of the hole on the parachute‚ the time it will take to the parachute to reach the ground will be shorter and its flight will be less balanced. Apparatus: - garbage bag (squared shape
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significant change during the experiment. Therefore‚ the hypothesis remains true for the control‚ even with the obvious
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significant amount of changes in laws and culture today. There was the 18th amendment‚ which banned alcohol‚ there was also no gay marriage allowed. One big thing about U.S society in the 1920s was that Christianity was the main religion and there were many things in the bible that were questionable and people didn’t agree with. Today there are many more religions and cultures accepted in the United States. Although society has improved there continues to be conflicts over laws and society that are similar
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a tremendous variety of oxidation states that appear in its compounds. The oxidation numbers range from Mn (III) in compounds like Mn(NO)3CO to Mn (VII) in KMnO4. Compounds of manganese range in oxidation number between theses two extremes. This experiment involves the preparation of a Mn (III) complex of actylacetone (also named 2‚4-pentanedione) which is a useful starting material for the preparation of other Mn (III) compounds. Manganese (III) complexes are relatively stable and can be prepared
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The Holy experiment William Penn holy experiment is to create a colony on the principle of self-government‚ religious toleration‚ and brotherly love. William Penn make a government which can run with the law of the people. Pennsylvania first constitution organized the government into three parts: the governor‚ the seventy two member of provisional council‚ and general assembly with two hundred member. While the proprietor held his office by hereditary‚ the council and assembly were elected by the
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CHEM 101L GENERAL CHEMISTRY LAB FALL 2012‚ Friday 1:00 PM-3:50 PM Professor: Dr. Rostislav Bukasov Office: 7107 Office hours: Monday 5:00-6:00 PM; Tuesday 9.00-10.00 AM; Wednesday 11:00 AM–12:00 PM; Thursday 4.00-5.00 PM; Friday 10.00-11.00 AM Phone: 7-7172-706665 E-mail: rostislav.bukasov@nu.edu.kz Teaching Assistant: Zhanar Kassenova E-mail: zhanar.kassenova@nu.edu.kz Office : 8527 Office hours: Tuesday: 11.00 - 12.00 pm; Thursday: 9.00 am - 10.00 am Course Overview Chemistry
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