ONLY 4-6 Summary- The History of the Cell TheoryAlthough they are externally very different, internally, an elephant, a sunflower, and an amoeba are allmade of the same building blocks. From the single cells that make up the most basic organisms tothe trillions of cells that constitute the complex structure of the human body, each and every livingbeing on Earth is comprised of cells. This idea, part of the cell theory, is one of the central tenantsof biology. Cell theory also states that cells are the basic functional unit of living organisms and thatall cells come from other cells. Although this knowledge is foundational today, scientists did notalways know about cells.Summary- Read the article and answer the questions:1. What building blocks make up every living thing?The discovery of the cell would not have been possible if not for advancements to the microscope.Interested in learning more about the microscopic world, scientist Robert Hooke improved the designof the existing compound microscope in 1665. His microscope used three lenses and a stage light,which illuminated and enlarged the specimens. These advancements allowed Hooke to seesomething wondrous when he placed a piece of cork under the microscope. Hooke detailed hisobservations of this tiny and previously unseen world in his book, Micrographia. To him, the corklooked as if it was made of tiny pores, which he came to call “cells" because they reminded him of thecells in a monastery.2. What scientific tool led to the discovery of the cell?Not long after Hooke's discovery, Dutch scientist Antonie van Leeuwenhoek detected other hidden,minuscule organisms-bacteria (examples of prokaryotes). It was unsurprising that vanLeeuwenhoek would make such a discovery. What Van Leeuwenhoek saw with these microscopeswas bacteria and protozoa, but he called these tiny creatures "animalcules." Van Leeuwenhoekbecame fascinated.3. What did Antonie van Leewenhoek see in his teeth plaque/4. What did scientists notice as one of differences between the plant andHe even took a look at the plaque between his teeth under the microscope. In a letter to the RoyalSociety, he wrote, "I then most always saw, with great wonder, that in the said matter there weremany very little living animalcules, very prettily a-moving."animal cells?In the nineteenth century, biologists began taking a closer look at both animal and plant tissues,perfecting cell theory. Scientists could readily tell that plants were completely made up of cells due totheir cell wall. However, this was not so obvious for animal cells, which lack a cell wall. Manyscientists believed that animals were made of “globules."5. What did Rudolf Virchow discover?German scientists Theodore Schwann and Mattias Schleiden studied cells of animals and plantsrespectively. These scientists identified key differences between the two cell types and put forth theidea that cells were the fundamental units of both plants and animals.6. What are the 3 principles of the cell theory?However, Schwann and Schleiden misunderstood how cells grow. Schleiden believed that cells were"seeded" by the nucleus and grew from there. Similarly, Schwann claimed that animal cells"crystalized" from the material between other cells. Eventually, other scientists began to uncover thetruth. Another piece of the cell theory puzzle was identified by Rudolf Virchow in 1855, who statedthat all cells are generated by existing cells.1.2.The discovery of the cell has had a far greater impact on science than Hooke could have everdreamed in 1665. In addition to giving us a fundamental understanding of the building blocks of allliving organisms, the discovery of the cell has led to advances in medical technology and treatment.Today, scientists are working on personalized medicine, which would allow us to grow stem cells fromour very own cells and then use them to understand disease processes. All of this and more grewfrom a single observation of the cell in a cork.3.

Name: ONLY 4-6 Summary- The History of the Cell TheoryAlthough they are exte
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Description: ONLY 4-6 Summary- The History of the Cell TheoryAlthough they are externally very different, internally, an elephant, a sunflower, and an amoeba are allmade of the same building blocks. From the single cells that make up the most basic organisms toth