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Here there is the cell analogy we have made of a cruise ship.

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This are notes which I have taken in class. It is a more visual way to understand mitosis and the parts of a chromosome. There are also some definitions but the purpose of this notes is to make a more visual version of the real dossier.

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Here there is the main explanation about what mitosis is. It is briefly a cell division of the cell There are also explained the 2 first steps of mitosis.

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It is a continuity of the steps of mitosis. Here are explained the last two steps that a cell need to do to divide.

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This drawing enables us to know every part of a prokaryotic cell. It really differs from an eukaryotic cell. The main difference is that the genetic material is spread throughout the cytoplasm and there are not as much organelles neither the same ones than eukaryotic cells. In this picture, it also makes a difference in the distribution of the organelles between a bacterium and a cyanophyte.

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Here there is a drawing of a prokaryotic cell. We know that it's magnification is 90000x What is its actual size? Answer it in nm.

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It shows the plant cell and we can know by sure where all the parts are situated. There is a main difference between plant cell and animall cell and this is the appearance of chloroplast, cell wall and a very large vacuole.

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It shows an animal cell selecting all the parts of it. The animal cell like the plant cell are eukaryotic cells which mean they will be very similar to each other. They will also have characteristics organelles such us the nucleus where they keep the DNA. The nucleus is the most important part of the cell because it controls the rest of it.

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To solve that problem you just need to measure the image size of the cell and divide it into the magnification.

Dates
image size = 20.5cm
magnification = 90,000x
real size = x
real size = image size/magnification

Steps
real size = 20.5cm/90,000
real size = 2.27x10⁻⁴cm
2.27x10⁻⁴cm x 106 nm = 227.77 nm