Biology Lab Report Essay

For example, the potato pieces were measured and cut using a standard ruler. As a result the length of the potato pieces were inaccurate by 0.1-0.2 cm. This could have caused misinterpretations and inconsistency in the data. Another limitation while conducting this experiment was that our working station and storage stations were different. As a result, once we finished working, we had to move the beakers containing the sugar solution and potato pieces to a secluded and secure location to avoid disturbance.

Technology has made it possible to examine diseases at the smallest molecular level possible. This has helped greatly when professionals need to determine what antibodies need to be treated for a certain health problem, whether it be bacteria, or a virus. An advancement in medical laboratories have made it possible to chemically manipulate molecules and monitor their behavior in different controlled

They either make hearts rates slower or faster depending on if it is a stimulant or depressant. As shown in the data below, Pau D’Arco has varying results. Upon further research, Pau D’Arco is actually a stimulant proving the hypothesis wrong. It also could have been due to the worm dying in between tests, but it is impossible to prove that theory right. The data collected may not be the most reliable since the two test had two different worms, and that might cause two different reactions to the chemicals.

Researches have created computer models that are able to simulate human biology and the progression of developing diseases. Also it accurately predicts how the human body will react to the new drugs, unlike animal testing. Lastly, researching with human volunteers is a way to replace animal testing. “ ‘Microdosing’ is a method that provides vital information on the safety of an experimental drug and how it is metabolized in humans prior to large-scale human trials” (www.peta.org). Volunteers who have agreed to be a part of the test are given an extremely small drug dose and are monitored by highly advanced imaging techniques to observe how the drug behaves in the body.

Lymphadenitis Lymphadenitis is the result of swollen lymph nodes due to an infection. Due to the large number of microbes that are collected from tissue fluid and circulate in the lymph vessels, the macrophages present in the lymph nodes may not be able to ingest them as they may be too large, thus leading to the enlargement of the lymph node. When a lymph node become infected, they are usually a lot more noticeable due to the increase in size, the lymph nodes becomes tender and are felt in other parts of the body. Normal lymph nodes can only be felt under the jaw, under your arms and in the groin area. The main cause of lymphadenitis is when the lymph nodes swell due to an infection or virus such as the common cold.

What's more, they begin duplicating rapidly and multiply at incredible velocities. It is trusted that this change happens in the cell because of a transformation (change) in the DNA structure of the cell. The strange cells have no place to move and begin lumping in the area, making knocks or tumors that we see. Before long, these cells begin contaminating different cells and make them harmful. Age and Gender In spite of the fact that individuals of any age have the danger of getting cerebrum disease, the rate of

Due to this difference in appearance one may assume that these plants are of different species. However, this in fact is not the case and the two different coloured hydrangeas can reproduce together. The colour difference can occur as a result of the pH of the soil and the amount of aluminium taken up by the plants. The Biological Species Concept is not the only concept used to classify species, there are many others and as no one method has been determined to be most accurate, it is largely left up to each taxonomists own judgement to decide which method they prefer. Some of these other concepts

Next there are damaging effects that could cause problems with the body such as diarrhea, sickness, or even death. The environment of that whole town would be impacted by the water and animals will also experience the effects of it. “The major concern for surface-water quality is the promotion of algae growth (known as eutrophication), which can result in decreased oxygen levels, fish kills, clogged pipelines, and reduced recreational opportunities.” (Turk & Bensel, 2014). Human activies can affect the water oil, acid, and detergents to flow into the water supply after .our daily activies are seen as harmless , however when I look at ait we as a society are all involoved in these activies these are common habbits cooking or maintenance on a car withcontaminants such as cooking oil, motor oils, detergents when washing dishes, household cleaning products, detergents for washing clothes, shampoos, toothpaste and just about everything liquid that can be poured down the sink could contaminate the water supply

The vagina is not sterile either and the whole birth process is just messy, involving the exchange of many body fluids. The placenta could also sit on the counter for too long, exposing it to other bacteria and pathogens. The placenta is just like any meat product, it needs to be refrigerated as soon as possible. This does not always happen in the confusion of labour and

Bacteria is a serious issue people all around the world face today, and it is an issue that needs to be discussed. Bacteria is smart and dangerous. It has the ability to change into diffrent forms. In fact, according to article "Doctors Enlisted to Turn the Tide on Antibiotic Resistance" and "A Spray That Stops Bacteria From Talking to Each Other Could Reduce Dependence on Antibiotics" some microbes are changing faster than antimicrobials can kill them. As a result, people can contract a bacterial infection that has no cure.

However, this determination is not always straightforward. Viruses have some, but not all, of the qualities of living organisms, and scientists have long argued whether or not they should be considered as living organisms. In this exercise you will determine whether specimens are non-living, living, or dead. CHARACTERISTICS OF LIFE - STATION LAB Lab Procedures: First, observe the specimens located at each station without touching it. Examine their size, color, shape, and even smell (if possible).

It is evident that there were errors present though out gel electrophoresis in terms of timing the traveling of the DNA and the photography of the gel. As mentioned before humans have between 2 – 20 copies of the gene, and that humans have at least 2 copies of every gene one maternally and one paternally. Seeing that the entire class only had one gene copy, it is evident that something must have been done incorrectly during the use of computer tools to find the Adj. Vol (INT) on a blurry image or something went wrong with the PCR mixture. Thus it is not possible to correlate the AMY1 gene copy number and the concentration of salivary amylase based on our results alone, so in the process we are also unable to disprove or prove the results obtained by the Parry

If I could change the assignment I would make the requirements clearer in the assignment document in the checklist. Additionally, standardized scaling needs to be used, as some TA’s grade differently than other TA’s. The assignments have many unwritten expectations and requirements not only for content but also in formatting. These issues need to be addressed to not only minimize confusion amongst the students, but also to decrease the amount of time TA’s repeat themselves about these unwritten requirements. My level of interest in the experiments that were conducted in the lab did not change over the semester.

Some problems that might have occurred in the lab is that we either put too much ampicillin in our LB/amp/ara dish or we could have had all plasma and no bacteria. Something that was difficult for me personally was the disposing of the pipette tips when switching from different substances and pipetting the right amount. These difficulties might have caused me to make mistakes on the amount needed to pipette or the type of substance. Overall, next time I would have made sure to pay closer attention to the pipetting portion of the procedure. Furthermore, we could extend this experiment by trying different kinds of

During the Aztec and Incan Empire period they did not have the technology we had. They did not have the tractors to farm the fields, the fancy working tools like drills and saws, or even fancy plates or silverware we have today. This Aztec and Incan people had the greatest mentality to come up with thse great inventions to survive that we still use to this day but more modern. These Aztec and Incan people had a very awkaward but advanced way of living. There houses were not the most fanciest place to live in but a lot of them poor houses had this one object and it was found everywhere in the structure of the house in the kitchen and even in the art side of the house.