Summary : An Overview Of The World

Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size, and so they were not seen and described until 1665, when Robert Hooke first looked at dead cells from an oak tree. His contemporary, Anton van Leeuwenhoek, crafted lenses and with the improvements in optical aids, a new world was opened. Magnification and resolving power limit what can be seen. Explain the difference. Magnification is the ratio of an object’s image size to its real size. Resolution is a measure of the clarity of the image; it is the minimum distance two points can be separated and still be distinguished

The author, Robert B. Marks introduces the book, The Origins of the Modern World by introducing the reader to a global narrative of the origins of the modern world starting from 1400 to the present. The book presents the rise of the west as an issue of globalization of Asia, Africa, and the New World. Throughout the book, we see the connection made by the author between the environmental condition and the present economic status of a particular place. By the end of the book, readers are able to understand and reason out what created and solidified a gap between the east and the west, industrialized and non-industrialized and parts of the world that today are defined as the modern world.

Based on the image shown and after investigation, the decision made was that Unknown A is a protest. The organism did not have a defined shape, it had organelles and finger like projections. Other groups determined that Unknown A was an animal cell because it had a nucleus, cell membrane, and has organelles. Considering the image of Unknown A presented in class, I concur with this observation. However, because of the organelles present, I do not agree with conclusion.

In his article “Globalization: Two Visions Of The Future Of Humanity”, Marcelo Gleiser states that there are two possible outcomes of the process of globalization. At first, he predicts that world can turn into a true global village due to the development of technology, traveling, trade and Internet. However, Gleizer explains that it is not easy to foresee unknown and questions how much this “scientific utopia” (8) is realistic, when considering politics and culture. Then, he argues that globalization cannot be achieved due to “evolved tribal nature” (9) of humanity, even though it is implied as the process which will diminish any barrier between various cultures. He states there is no doubt that trade and travel barriers will disappear by

Using the microscope provided to analyze the different size of the different cells and organisms

First, we discovered that we should start with low power objective to observe. To focus the image, use the coarse adjustment knob to adjust it. When looking at high power objectives, the fine adjustment knob can be used. Also we discovered that when you move the slide towards you, it appears to move away. When observing the letter “e”, we discovered that the images observed under the light are inverted and reversed. Although we could not easily tell with the feather, threads, and potato, it became noticeable with the letter “e”. The “e” was placed like “e”, however when looked into the eyepiece, the “e” was upside down. This shows that the microscopes works in an inverted way. We also discovered that to adjust the amount of light entering the microscope, we could use the iris lever to adjust the diaphragm. For example, the white thread required little light to see the cotton fibers, compared to the feather or letter “e”. Therefore, we learned that by altering the diaphragm, we can fix many of the problems associated with the observations. Lastly, we discovered that only one depth can be seen clearly at a time under high power. When working with the crossed strands of thread, we had to turn the fine wheel adjustment back and forth while looking through the microscope to focus one strand. All in all, the lab supported the purpose. We were able to identify,function the parts of a light microscope, and prepare a wet mount(of a feather, letter “e”, black and white thread, and a potato). Furthermore, we located objects using high and low power objectives, adjusted the diaphragm to attain correct lighting, and used stains for an easier and more detailed

In the wake of WWII, peace was the main goal sought out by the entirety of the world. However as the twentieth century hit its halfway mark, the conflicting ideals of two countries dragged the world into a tense struggle for power and international identity yet again. The United States of America (USA) and the Union of Soviet Socialist Republics (USSR), were now in a competition to sway the rest of the world’s unaffiliated nations. This political, ideological, scientific and military effort would ultimately determine the winner’s role in global affairs from that point on and the loser would experience reduced ability to exert hegemony in developing regions of the world. One notable tool each nation used was their progress in the field of

Organelles are one of the most fascinating aspects of A-Level Biology and are one of the first things that convinced me that Biochemistry is what I wanted to pursue at the challenging level of university. I became interested in the topic of life at a cellular and molecular level during early GCSE studies in year nine. After coming across a detailed diagram of the human cell, which was a contrast to what I was being taught at the time. Detail is something that has always been important to me and is where my desire to understand this concept comes from. After learning in class that mitochondria used to be a separate organism I read "Mitochondria and the Meaning of Life" looking for some answers.

The gunk contained many fibrous cells, these cells were from the broken down cells. Also it contained debris in the sample from the dirt, but did not see other organelles. In pallet one, as a group we were able to see nuclei of cells that were the brown spots in the diagram. Starch was also seen which was in purple, and we continued to see more debris. The first pallet is referred as the nuclear palette since it contained a vast amount of nuclei. The last palette contained starch particles that were coloured in dye, and also contained mitochondria, which were the small dots and lines. The objects, organelles and other structures that were observed within the supernatant 2 sample were mainly ribosomes because once the sample was centrifuged they were segregated and brought to the top of the

and those whose citizens live in general ease are the same countries with the highest rates of suicide, violet crime, drug abuse, divorce, and crime. The wealthiest societies are also the least happy societies throughout history and all over the world.

To obtain some organisms, I took four samples from four different environments and put them on a petri plate. The petri plate was then put in the incubator at 37°C for forty eight hours (Lammert, 2007). Out of four, samples A and D grew nothing and sample B had some growth but not much. As a result I had to choose two unknown organism, that were possibly different, from the third quadrant. This quadrant, which I refer to as sample C, was taken using a wet swab on the border of my right shoe. From a spot where the white border had an orange tint. In that quadrant, specimen Ca. came from a lone circular spot near the rim whereas specimen Cb. came from a fibrous colony near the tip of the quadrant.

One method, which can be used to facilitate the task, involved a list of the different structures. From there, the students would be able to use the list of cellular structures to help them label the diagram. For this task, I would print 5 copies of an unlabelled diagram of a human cell and would give them to the students. It would be essential to use the list of cellular structures since they are required to learn new terms. This activity relates to the outcomes because this will require the students to associate the name of cellular structures to the diagram. This is essential because this is the basics of molecular biology. This task is expected to be achieved in about 5 minutes, depending on whether the students are able to recall the name of the different structures and link them to the diagram of a human

The TED video Animations of Un-Seeable Biology, delves into the parts of cells that we cannot see. With molecules being smaller than a light wave, there is no way that humans can see the breakdown of the molecules to study them. Scientists have drawn pictures of the molecules to express to us what the molecules would look like. In this essay, I will tell you what the microtubules do in the molecules, and if these animations of the microtubules help me understand more about the biological process.

In the seminar that Dr. Gitai gave, he presented several questions that he asked himself, and his research team, while investigating why bacteria have certain shapes. His questions seemed very simple, but had no clear answers yet. He strategically began the seminar by asking how cells make big structures from small parts, and using analogies such as human height to compare how although it may seem that humans

Life on this planet began with microorganisms. Through millions of years microorganisms have found ways to successfully adapt and survive. These adaptations have created a wide biodiversity, allowing them to basically populate in all places. Why are these microbes so important? Because they shape the history of our world. Some microbes can be deathly to humans while some others are favorable, for example, bacteria that lives in the gut of both humans and animals and helps during the process of digestion (Alfred Brown & Heidi Smith, 2006). Understanding these interactions help scientists to find ways to protect humans from potential deathly pathogens. In order to observe microbes, microscope proficiency and microorganisms’ identification are crucial skills in a microbiology lab. During this laboratory session, samples of environmental and human organisms were inoculated into two different rich media and incubated to their according temperature. After this, appropriate use and calibration of the microscope was performed. Lastly, morphology and size of different species of bacteria, algae, fungi and protozoan were recorded.