In the first part of this lab‚ E.coli cells were transformed with an R-plasmid carrying a tetracycline resistant gene‚ giving rise to tetracycline resistant E.coli strain. This was accomplished through transformation‚ which allowed E.coli to directly uptake the naked DNA molecule carrying the antibiotic resistant gene (1). However‚ in order to take up the DNA and incorporate them into their genome via recombination‚ cells must be competent (1). Therefore‚ E.coli cells which are not competent under
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Biology 102 Lab Report: Ventilation and Oxygen Consumption in Fish Methods: The lab consists of two experiments repeated over a period one hour with fifteen minutes interval‚ in order to determine the effect of weight and temperature on ventilation and oxygen consumption of Carassius auratus‚ commonly known as goldfish. Each experiment was carried out by five groups. Measurement of ventilation was determined by recording operculum movement of the fish. Oxygen consumption was measured using oxygen
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selected‚ and the highest temperatures are recorded. The data are shown. At a=0.05 can the claim be rejected? a=7.7 97‚ 101‚ 99‚ 99‚ 100‚ 94‚ 87‚ 99‚ 108‚ 93‚ 96‚ 88‚ 98‚ 97‚88‚ 105‚ 97‚ 96‚ 98‚ 102‚ 99‚ 94‚ 96‚ 114‚ 99‚ 96‚ 98‚ 97‚ 91‚ 98‚ 80‚ 95‚ 98‚ 96‚ 80‚ 95‚ 88‚ 99‚ 102‚ 95‚ 101‚ 94‚ 92‚ 99‚ 101‚ 97‚ 94‚ 97‚ 102‚ 61. The claim can be rejected; correct answer may be either above 98 or below it. 2. Salaries for Actuaries nationwide graduates entering the actuarial field earn $40‚000. A college
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INTRODUCTION The Babylonians used a sexagesimal (base 60) numeral system to make astronomical calculations‚ from which the use of 60 seconds in a minute and 60 minutes in an hour is derived. I will research how the Babylonians used this system to measure time. I have chosen the topic Babylonian time system as it relates history and math. I find it fascinating how in the past‚ people had to come up with elaborate theories and intricate systems from scratch‚ as compared to how modern day mathematicians
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Daniel Kim 12-3-12 HBS‚ period 1 Reaction time experiment Caffeine and Reaction Time 1) Identify the Problem or Question How does the consumption of caffeine affect the reaction time of the nervous system? 2) Introduction Purpose of the experiment: To identify the whether or not caffeine increases or decreases the reaction time of the nervous system. In our experiment‚ we have decided to use all the “cases” which will test how fast a signal from our brain will be sent to our
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Hence‚ HCF of 196 and 38220 is 196. (iii) In 867 and 255‚ 867 is larger integer. Using Euclid’s division algorithm 867 = 255 × 3 + 102 [Where 255 is divisor‚ 102 is remainder] Since‚ remainder 102 ≠ 0 ‚ by applying Eudid’s division algorithm to 255 and 102 ∴ 255 = 102 × 2 + 51 Since‚ remainder 51 ≠ 0 ‚ by applying Eudid’s division algorithm 102 and 51 So‚ 102 = 51 × 2 + 0 remainder = 0 The remainder is zero so our procedure stops. Hence‚ HCF of 867 and 255 is 51. Q.2. Show that any positive
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the control valve. Open bench inlet valve and slowly fill the head tank to the overflow level‚ then close the inlet valve .open and close flow control valve to admit water to the flow visualization pipe. Allow the apparatus to stand at least ten minutes before proceeding. Measure the temperature of the water. * Open the inlet valve slightly until water trickles from the outlet pipe. Fractionally open the control valve and adjust dye control valve until slow flow with dye indication is achieved
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subject (measured by number of beats per minute). The controlled variables include the temperature of the hallway where the experiment is being conducted‚ which is at room temperature; the amount of time each action is to be completed (1 minute)‚ timed with a stopwatch; the amount of time each subject’s heart rate is measured for (15 seconds)‚ timed with a stopwatch; the amount of time allotted for the subject to rest in between each action (1 minute)‚ timed with a stopwatch; using the same
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Shauna Crawford Mr. Meadows ENG 102 20 January 2014 Soldier Do not speak unless spoken to; always begin and end your sentence with “Drill Sergeant;” stand up straight; lace up your boots tighter; blouse your pants like this; do not say sorry‚ try harder; curl those damn fingers; thirty inch steps precisely not baby ones; just look forward to chow time; lights out is at 2100 sharp; wake up is at 0400; quit making excuses; this is how you shine your shoes; this is how you make a bed; this is how
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4) 9. Record your Data after 1 Minute and 30 Seconds 10. Grab 2 Test Tubes and follow Steps 1-6 on the regular procedure on Enzymes in Action sheet EXCEPT using 5 Filter Paper Punches (See Figure 3 & 4) 11. Record your Data after 1 Minute and 30 Seconds 12. Grab 2 Test Tubes and follow Steps 1-6 on the regular procedure on Enzymes in Action sheet EXCEPT using 1 Filter Paper Punch (See Figure 3 & 4) 13. Record your Data after 1 Minute and 30 Seconds 14. Clean up your
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