Unit 3 Reflection

After studying about Unit 3, I have learned quite a lot about cells. From exploring the inside of the cells, to their history and evolution, Cells have gone a long way from the beginnings of Earth. I understand most of the history and reactions that occur within the cell, but struggle a little when trying to remember the many parts of a Eukaryotic Cell. Otherwise, I understand how prokaryotic cells evolved to become the very cells in our body, or photosynthesis, osmosis, diffusion and cellular respiration.

A quick summary of Unit 3 would be that it is about cells. Cells are either prokaryotic / singular or eukaryotic / multicellular. They evolved from the single celled organisms that swarmed the lifeless earth, to autotroph cells that produce oxygen and food for the cell, giving life to Earth. Later on, Heterotroph cells became more popular as it ate the autotroph cells. By accident, the autotroph cell sometimes would survive getting eaten and merge with the cell. This made the first eukaryotic cells, with an inside that produces energy and an outside that protects the inside. This type of cell became more and more popular till it had also evolved to different cells still related to the original. Photosynthesis was one way cells produced energy and food for themselves, and cellular respiration was the other part of the cycle, that used the products of photosynthesis to make its reactants. Osmosis and diffusion were ways that the cell adapted to changing environments and the transfer of materials.

From learning this unit, I have learned my many flaws, but also learned more about the subject and ways to improve myself. I hope this summary and overview about this unit was helpful, and can be used in studies.