...1. The various contaminated areas in school according to the acquired class data was the front door entrance handles and the biology classroom doorknob. In the individual experiment conducted revolving the four locations in table 2 the front door handles contained a greater amount of bacteria than the AC vents and the office water dispenser. The least contaminated areas according to the class data was the cafeteria microwaves and after further observation a question was made, could the constant use of high heat or the microwave radiation have killed the bacteria or is there a possibility that the microwave could have been cleaned beforehand which resulted in the fact that it is the cleanest area for now before it is used and contaminated, compared to the science glass beaker that had been each day but had remained in a storage container for a long period of time and had produced more bacterial growth than the microwave....
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...1. What is the purpose of flaming the loop before and after use? This process sterilizes the inoculating loop before the experiment. By passing the inoculating loop through the warmest part of the flame (the tip of the inner blue flame), the heat kills any microbes and prevents contaminating microorganisms from interfering with the integrity and accuracy and contaminating your experiment. This process is known as flame sterilization. Flaming the loop after the experiment once again kills any contaminating microorganisms (bacteria) that may still be on the loop from the previous colony/culture/broth/medium it came into contact with. This prevents the spread (cross contamination) of unwanted/possibly contaminating bacteria which may contaminate the experiment and yield incorrect/unreliable results. 2....
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...1. Cyclin is a key regulator to the cell cycle. Each type of cyclin is specific for a particular phase. It is essential in order for necessary events to occur during various periods. For the cell cycle to progress, proteins inside the cell must be either activated or deactivated by cyclin. The events can take place when cyclin works with CDKs (cyclin dependent kinases), which are a group of enzymes. Their function is made possible when cyclin properly binds to an inactive form. When cyclin is not broken down, CDK remains inactive, which means target cells, cannot be reached and therefore not modified. As a result, the S phase cannot begin. The enzymes of DNA replication cannot be activated. This in turn affects MPF (maturation-promoting factor) not being able to drive transitions of the cell cycle. Ultimately, the activities of the cell cycle cannot be regulated. Thus if cyclin is not broken down through mitosis, a rapid production will occur leading to mutations and cancer. 2....
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...Laboratory Questions: 1,2,3,4, and 5 1. Part A.3. Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected? Explain. If some of the solvent has vaporized, the freezing point in part A.3. will not be affected because in that step the cyclohexane is still a pure substance without a solute to lower its freezing point (Beran, 2014). 2. Part A.3. The digital thermometer is miscalibrated by +0.15°C over its entire range. If the same thermometer is used in part B.2 will the reported moles of solute in the solution be too high, too low or unaffected? Explain. Because of the miscalibrated thermometer being used for each part of the experiment, the calculation for the reported moles of the solute will remain unaffected because the calculations only take the overall change of the freezing point into consideration, not the freezing point itself (Beran, 2014)....
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...God created man in his own image, and since limits do not bound God, the athletic limit of of humans remains undetermined. In Lab 2, the progression of the men’s 100 meter freestyle world record engages people to ponder the possibility to human performance and how fast a man can swim the event. Since the early 1900’s, the world record has steadily decreased and the mathematical model provided in the lab accurately represents some of the historical time period, but the model appears to limit human performance to 44 in the race. Predicting the times around 1980-2010 very closely, the model then slopes to a near horizontal line above y = 44. Although the future of the potential time remains in question, other historical evidence persuades me to believe man will swim faster than the model limits....
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...Technology is ever changing in today’s world. Most people are accustomed to the traditional fixed line LAN, but there are others who are always on the go and would like to explore the possibility of cellular networks. The purpose of this paper is to compare and contrast several attributes of purely fixed line networks vs. having a purely cellular network. Fixed line networks have been and will continue to be a huge industry because the major players provide the backbone. For this reason alone, the company should not expect to pay outrageous prices for equipment. From a security standpoint, fixed line networks are less susceptible to wire sniffing attacks and more secure than cellular networks due to the fact that the hacker would have to gain access to the fixed line network rather than simply intercepting the transmission from a cellular network. While fixed line networks are considered the norm for most companies, they do have limitations. A company which adopts a purely fixed line network will not have the capability to send or receive data unless the user is physically inside the company. This would prove to be a major drawback to companies who have employees who travel to other cities to attend meetings, seminars, etc. Cellular networks are relatively new and are still developing. While employers can expect increased productivity due to employees being able to send and receive data at any time, one important drawback is the fact that the employees need to be in...
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...In order to get the future value on an investment one has to use the formula A=P(1+i)^n . Where A is the future value, P is the present value, R is the annual rate, M is the number of compounding periods per year, I is the rate per compounding period, and N is the total number of compounding periods. For Example: If an investment of $100 were made in 1776, and if it earned 3% compounded quarterly how much would it be worth in 2026? After one determines that 100 is the present value, one has to divide the interest rate by four. In addition, one has to multiply the years that the money was invested times four. That is to say that since the interest is compounded quarterly, 3% is going to be multiplied by your balance four times every year. The quotient of 0.03/4=.0075....
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...NT1310 Codi Roebuck Unit 10 Lab 1 01/04/2016 Professor: Ronald j. wojcik Fiber optics for diagnostics and troubleshooting are used in varying capacities to test, measure, analyze, transmit, distribute, and/or simulate an optical signal with which the technician can perform procedures and processes associated with maintenance, problem solving, and calibration of equipment and/or networks. Normally in these applications, fiber optic products are used to create loop tests or transmit signals from point-to-point (either single-point to single-point, or single-point to multiple-points). For loop testing, commonly referred to as loopback testing, a signal is sent from a piece of equipment through a loopback or cable and returned to the source, simulating a complete network connection. This type of test allows technicians to perform function tests and internal diagnostic processes without the equipment being physically tied to an active network. This type of setup provides technicians with the advantage of easily isolating individual components for faster, more comprehensive analysis. With signal transmission applications, technicians generally use cables (multiple types for different applications) to connect one or more pieces of...
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...Lab 1 Assignment 4. Write a program that plays a series of musical notes or sounds on the MIDI audio output. (Hint: syscall 33) Pseudo Code: 1) Pitch is assigned to register a0 2) Duration of sound in milliseconds is assigned to register a1 3) Instrument is assigned to register a2 4) Volume is assigned to register a3 5) Syscall to play the tone Mips code: .globl main .data .text main: li $a0, 60 # pitch li $a1, 5000 # duration li $a2, 72 #instrument li $a3, 127 #volume li $v0, 33 # syscall to play the tone syscall li $a0, 10 #pitch li $a1, 5000 #duration li $a2, 72 #instrument li $a3, 127 #volume li $v0, 33 #syscall...
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...Unit 7 Lab 1 New Building Safety Plan In my safety plan the first things that I’m going to cover are the PPE for working on a construction site where a new building is being placed. First you’re going to need a hard hat so that when anything falls from above, it keeps your brains where they belong like in your head. Second steel toed shoes or boots, preferably boot for a little extra ankle support. But the steel toes to protect your feet from anything being dropped or lowered in case your foot gets in the way. Safety goggles, pretty self-explanatory on this one, just need to keep things out of your eyes! Long pants (blue jeans) protect your legs from different object that could hurt your skin but with pants on you might just get a bruise. Next on the list gloves are always a good idea to wear so that you don’t rip your hands up while you’re working! A water cooler is a must in this situation because it’s going to be hot out and hydration is key to survival! There will also be no running on the job site. Hurry to quickly can cause more accidents than any amount of production you’re getting for running that thirty foot. Only work on the parts of the job that you know, if someone ask for help go ahead and give them a hand but if you’re a plumber then just let the electrician handle his own job. Back to PPE for a sec a back brace would be a good idea to wear also. Once you have a back injury it will be a problem for the rest of your life in most cases. In case of an emergency...
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...TASK 1 Comparing light and electron microscope Note:- A microscope is an instrument used for viewing a tiny object that cannot be seen with our naked eyes. The microscope is an important instrument found in the laboratory. We have two types of microscope. Light Microscope and Electron Microscope. The light Microscope is one which can be illuminated by light while an electron microscope is one which can be illuminated by electron. Electron microscope is expensive and not portable compared to the light microscope. The Electron microscope is then of two types. We have the Scanning Electron microscope and the Transmission Electron microscope. Features Light Microscope Electron Microscope Comments Cell Components Seen Animal Cell:- Nucleus, Nucleolus...
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...Questions: (1 pt each response, 7 pts total) 3. What does your data indicate about the rate of cell division in cancerous tissue compared to the rate of cell division in normal tissue? What data did you use to answer this question? Answer: By comparing table 3 (normal cell tissue table) and table 4 (cancerous cell tissue table) I found that cancerous cell tissue has much faster rate of cell division. Specifically, I looked at the mitotic indexes on both tables and found that cancerous cell tissue actively divides at a much faster rate than normal cell tissue. 4. Which type of cancer is the fastest growing? Explain your answer, using your relevant data. Answer: By looking at the mitotic index side of table 4 (cancerous cell tissue table) I found that ovarian cancer has the fastest growth rate. 5. With what you have observed in this lab, if you were to compare tissue sample from normal breast tissue and cancerous breast tissue: a. Would you expect to see a difference in the rate of cell division...
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...What safety procedures must you follow during this lab period? During this lab period, the safety procedure that should be followed are safety glasses, lab coat gloves and proper tools for dissection. Use a text book or online references to define the following word modifiers. Proto= “first” Deutero=second Stome= “organism having a mouth or mouthlike organ” Nephro= “relating to kidneys” How might you benefit from remembering the definitions of word parts? I might benefit from remembering the definitions of word parts because if I cannot remember the definition of the whole word the prefix or suffix can at least give me an idea of what it is. What diagnostic features are present in mollusks and annelids were not present in the phyla studied in the previous lab exercises? What...
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...A GPR is made up of three core components, control unit, antenna, and the power supply. The control unit is what contains the electronics which trigger the energy pulses to the antenna that sends it into the ground. The GSSI SIR 20, which was used in this lab, has a laptop with software loaded on it already which processes and interprets the data. The antenna is what receives the electrical pulse from the control unit and transmits it into the ground. The frequency is a huge factor in the depth penetration. The frequency that used was 200 MHz which is right between the high and low pass filter allowing a the signal to go deeper. The time interval for collecting this data was 400 ns with 20 traces per meter. In this amount of time and traces per meter, 12 transecs were collected. The AGC was used to amplify the GPR lines getting better data. The data from the GPR was then brought back to the lab and the lines and sections were examined to figure out the GPR facies. The equipment used for coring was an auger core....
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...2.1 Chemicals and buffers 2.1.1 Chemicals Chemicals used were of high molecular biology grade unless specified otherwise. A complete list of chemicals is available in Appendix 1. 2.1.2 Buffers Buffers were prepared with molecular biology grade chemicals. Buffer Composition TE Buffer 10mM Tris-Cl (pH 7.4), 1mM EDTA (pH 8.0) Loading buffer 0.25% bromophenol blue, 40% sucrose TAE Buffer 40mM Tris-acetate, 2mM EDTA 2.2 MEDIA 2.2.1 Great Artesian Basin (GAB) media The medium used for this project was designed to allow the growth of thermophiles and mesophiles that were isolated from the Great Artesian Basin. The media was adjusted to support the growth of both aerobic and anaerobic organisms. The media composition as grams/liter is as follows...
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