...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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... Analyze and Conclude In your own words, write a definition of DNA replication. Dna replication is when they copy a double stranded dna molecule. The bases are matched and edited to match their partner. Each strand acts as a main component for the replication What is the importance of replication? Why do cells replicate their DNA before dividing? They replace their data so the could get rid of the old dna so that the cell may be able to be healthy. Use the clues and words to help you write the vocabulary terms from the chapter in the blanks. You may use a word once or not at all. 3. tip of a chromosome telomere 4. enzyme that joins nucleotides to make a new strand of DNA Dna Polymerase 5. virus that infects bacteria bacteriophage 6. process of making a copy of DNA Replication Answer the following questions. Use the diagram to answer Questions 5 and 6. 7. What is the structure shown above? A. replication fork C. enzyme B. nucleotide(ANSWER) D. hydrogen bond 8. What is the molecule labeled A? A. sugar C. nitrogen base(ANSWER) B. phosphate group D. deoxyribose 9. In which type of cell is DNA circular? prokaryotic(ANSWER) eukaryotic 10. In which type of cell does replication begin at several points? prokaryotic eukaryotic(ANSWER) 11. Who first photographed DNA using X-ray diffraction? Franklin(ANSWER) Watson and Crick 12. Who first built a three-dimensional model of DNA? Franklin Watson and Crick(ANSWER) 13. In your own words,...
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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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...Amazon With amazon services you choose a service plan based upon a completely virtual environment. Using a preconfigured AMI (amazon machine image) or creating your own with its own set of network permissions and protocols. This also chooses instance types you may want. Multiple services using AMI and with that utilize static endpoints or attach persistent block storage to said instances. The resources you use is what you will pay for out of the total plan you have chosen based upon time or data transfer. Amazon also has an elastic block store based service with offers persistent storage for amazon EC2 instances. EC2 is a program which you decide a system to boot into it so it can be stopped and restarted with the whim of the client. With this the EBS volumes can be measured and observed by the client. EC2 also provides multiple locations. This is based mainly open regions and available zones. Elastic or dynamic IP addresses are available for wireless and mobile devices that will use these cloud services. Virtual private could is a thing all its own that will create logically isolated sections of the amazon web services which you can launch within your AWS resources to create a virtual network which you can also select your own section of IP addresses, subnets, and configuration of your route tables, networks and gateways. Within these services a Virtual private network (VPN). Amazon cloud watch is a service that monitors your data. This gives stats, graphs, and alarms when...
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...the attached cable through an inaccessible space. This allows you to pull the cable and protect the fiber ends from damage. PULL BOX – A pull box is usually installed after a long straight run or every time the set of turns totals 180 degrees or more. The pull box is used to create a intermediate opening for the pulling cable to reduce the length of cable being pulled through the conduit or to reduce the number of turns the cable is being pulled through at a given time. It is important to keep in mind the bend radius of the cable when using a pull box. SPLICE ENCLOSURES – Splice enclosures can take many forms depending on their location and application. Splice enclosures can be typically place in one of the two following categories. 1. Radial Splice Enclosures – radial splice enclosures have cables enter and exit the enclosure on the same side. 2. Axial Splice Enclosures – Axial splice enclosures have cables enter and exit on opposite ends of the enclosure. Enclosures designed for outdoor use are environmentally sealed. Typically all enclosures will include: * A strain relief system that ensures the...
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