During this week (31 August - 4 September), in biology class we started on Monday by learning further about cells and their organelle through Ms. Disty's explanation. I learned that prokaryotes evolve into eukaryote in order to became better and survive environmental changes. Prokaryotes also have flagella in order to help it move since its a single cell. Plant cells and animal cells are both eukaryote cells while protists are prokaryotes. The difference between plant cells and animal cells is that plant cell has cell wall, chloroplast, cytoskeleton and central vacuole while animal cells doesn't. But they both have vesicle, chromatin, cytoplasm, ER, golgi apparatus, lysosome, mitochondria, nucleus, nucleolus, plasma membrane, ribosomes and vacuole. Cells work just like the human body with the organelles as the organs with each of their different functions and the nucleus as the brain. We are also divided into our groups that day, and I'm lucky to be with the diligent kids (yay!). The disease that I choose as a topic for the project is MERS (Middle East Respiratory Syndrome). On Tuesday, in biology class we did our cell analogy worksheet and make analogy of how cell work with other thing. My group decided to do the analogy of how cells work with the system of business and the actors of business as the organelles. On Friday, in biology class we learn more deeper about cell membrane. I learned that cell membrane is the boundary between inside and outside of the cell and that it is also made of oil in order to contain what's inside of it. Materials goes in and out of cell membrane, going in through door called protein channels. Osmosis in cell happens when the molecules move from high concentration to low concentration place, there are simple, facilitated and active transport. Simple transport does not need channels, facilitated need channels and active transport needs ATP energy. So far, there's nothing I don't really understand about, but I maybe should learn more about cell membrane diffusion.
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During this week (24-28 August), in biology class we started everything with the introductions and class rules explanation on Monday. On Tuesday, we watch a movie titled “Gattaca” that integrates with biology. The movie is a science fiction movie where DNA determines everything, mostly a person’s social class. This movie also has a connection in what we are going to learn in this term's biology, which is about DNA and how it defines a person's identity. On Thursday, in biology class we did pre-assessment about cells. I manage to rocked on the assessment, lol just kidding. I really forgot everything about cells that I learned during sixth grade. So I tried to use my logic to finish the test, but it seems like its still not good enough. By this, I have made myself a note that I should study about cells all over from the beginning since I completely forget about it and the only thing I remember is nucleus. On Friday, Ms. Disty did a powerpoint presentation about cell theory and types of cells. There are four scientist, Janssen, Hooke, Pasteur and Leewenhoek who each had their theory about cell. Robert Hook was the first who discover cells and made a theory that cells are hollow inside, that's why its named cell, which means cellula or empty. There are also two types of cell, prokaryote and eukaryote. Their difference is that eukaryote has nucleus and membrane bound organelle, while prokaryote doesn't. The DNA on a prokaryote also has a circle form, while in eukaryote it has a linear form. There are still some things that I need to learn about cells more detailed such as the organelles, their differences and their functions. |
AuthorName: Astrida Nayla Archives
April 2016
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