Monday, August 29, 2011

what cell I want to be

People usually don't ask, which cell do you want to be? However, despite of the fact that no one asked, I'm going to answer this question anyways.
I've learned two types of cells during the science class. Prokaryotic and Eukaryotic. Prokaryotic is basically a simple cell that has 3 layers of protection. Moreover, they usually work as virus. 
In contrast, eukaryotic cell is more complexed form of cells that includes variety of organelles that makes cells alive and do different functions. 
Furthermore, there are two types of eukaryotic cells, animal and plant. 

Animal cell is has softer feature compared to plant cells. Moreover, cell membranes in animal cell carries out several procedures: Diffusion, Facilitated diffusion, and Osmosis. 


*Diffusion, Facilitated diffusion, and Osmosis*
Diffusion: Main method of small molecules moving through the cell membrane. Passive transport would be are high concentration to lower concentration. Active transport would be the opposite.  Molecules are always moving, and as they move the collide to each other. Moreover, collision will cause molecules to push away from one another. The substance of the molecule will spread until they get evenly throughout the area. 
Facilitated diffusion: Membrane has thin two layers of fat, and weird looking chamber. Moreover, facilitated diffusion would be transporting through the 'weird looking' chamber. The protein molecules fit to the right spot, and changes channels shape to make bigger molecules to move out. 
Osmosis : Osmosis is basically the diffusion process that is consisted only with water molecules. 


Organelles that are contained in the animal cell is endoplasmic reticulum, nucleus, mitochondria, vacuole, centriole, golgi appartus, and ribosomes. 
Different from animal cell, plant cell has a hard layer of protection call cell wall, and different kind of 'powerhouse' call chloroplast. 


To get to the point, I want to be an animal cell. 
Different from plant cell, Animal cell has softer surface and makes it look like it has jelly-ish feeling of texture. Also, even without a sunlight it produces protein from ribosomes and mitochondria producing ATP for cells surviving purpose. 
Animal cell also includes centrioles that produces structure like inner-skeleton to keep the basic shape of the cell. Contrasting to Plant cell, It doesn't need any fancy big looking cover to maintain its shape. 
with these 'Awesome' reasons I 'd want to be an animal cell. mhaha 'ㅅ' 

Wednesday, August 24, 2011

Facts about Prokaryotic cells

  • cells that lack a membrane-bound nucleus
  • has few internal structures
  • they have chromosomal DNA
  • Three major shapes - rod shaped, spherical, and spiral
  • unicellular
  • prokaryote came from greek word before
  • Belongs to two taxonomic domains: Bacteria and the archaea.
  • pilli- used as attachment purpose when exchange plasmids for asexual reproduction.
  • three layers of protection
  • plasma small DNA loop
Contrary to Eukaryotic cells 
  • no nucleus 
  • ribosomes are smaller than eukaryotic cells
  • genomes of it held within irregular DNA.
  • have larger surface area to volume. It provides them higher metabolic and higher growth rate. 
Common with Eukaryotic cells
  • DNA 
  • flagellum- used as movement purpose
  • both has ribosomes. (produce protein.)
  • cytoplasm
  • cell membrane



Saturday, August 20, 2011

Nutritional project

The nutrition project

Lately, our class has been working on the "nutrients project." 



The project started by our science teacher substituting as a professor in 'meal analyzing' company. She assigned us as 'nutritionist' groups so we can cooperate and successfully analyze the meals that our 'professor' gave us to analyze. Our group members of meals on wheels were: Gui, Filipe, Marina, and me. Winning the 'rock paper scissor' match, Filipe became our team leader. According to the instructions, our group started by choosing a group leader. 
Our group leader Felipe, then gave each of us our roles to cover. Moreover, we all had our parts of nutrients to research. Once we were done with the research, we had to analyze the menu, and decide whether it's appropriate or not. 
'OUR GOAL 'was to analyze the 3 menus and find which one was good for long-term or short-term. 
Among three menus, first one was claimed to be good for short-term diet. Sources of Fibers such as toast, vegetables, and potatoes are mentioned, however, it lacks proper amount of fat, and protein. 
Menu 2) we came up with a statement that menu 2 included the most balanced diet. With the balanced combination of chicken, toast, fish, almonds, etc... it provides variety sources of fats, protein, carbs, fiber and vitamin/minerals. Menu3) Among all, this menu had unusual extreme sources of fats. This menu was just too much. It overall contained too much calories which would definitely lead you to be fat. Therefore, our team presented that this menu is an improper diet. 

WHAT I LEARNED: 
My job area of research was Carbohydrates. Moreover, as I researched, I found a important piece of information that  fiber is one of the complex carbs, that  have important role on diet. Furthermore, Fiber is consisted with two types, Soluble and Insoluble. Soluble fibers can be found in oatmeals, and insoluble fibers can be found in wheat, vegetable etc... Soluble fibers dissolve in water, in contrast, insoluble fibers only dissolve in fat. Insoluble fibers are essential in preventing constipation. 

Here is the ppt that our group made: 
Showing our analyzed file. TOP SECRET (Click)


Self evaluation: I would like to give myself a 5. 
I didn't give myself a 4 because I accomplished more than basic by discussing, researching, and improving. I discussed about how we are going to present. I researched my area of nutrient, however, I went further and found essential material that also aids important role in dieting. 
However, I didn't give 6 to myself because to be honest, I played around with the computer. Moreover, I took responsibility of my work and spent extra time working at home. 

Among the areas of Leadership, organizational, time management, and teamwork, teamwork was the hardest. As we all had different opinions, one had to persuade others in order to make things in action. 

I don't think Time management, didn't work out well for me. To be honest with myself, I had desire within myself that made me, myself to be off-task. 
In contrast, leadership and organizational areas worked out well with the role division and Felipe's lead. Marina also had a big role in organizational area by trying to draw connections with nutrients and its effects. 



Thursday, August 18, 2011

Dr.Tae

During the class, we've watched interesting video that had taught us funny message. It was about Dr.Tae practicing his skateboarding skills. Moreover, while trying out his new skill, he had failed 53 times. As a result, he left us a message that putting effort is what that makes thing succeed. He also left a funny message saying "Work you ass off."

Jaewon's e-portfolio

Welcome ppl....
okay. so it might be random, but as it is my homework, let me start by introducing with the question of
What was the purpose of these first two days of school and what are my plans for this year?”

well our school Chapel started at August 4th Thursday. So as it is mentioned, we had first two days of school, day1 and day 2. Moreover, in my opinion, these days were just tasting a bit of how 9th grade would be look like. Well, as I already experienced the two days, 9th grade seems not as difficult as I thought it would be. However, I can see that we've got more assignments to do. Meaning, 9th grade seems little bit "busier" than 8th grade.
To get to the point, my main goal for this year is to really improve and develop my reading skills, so I can be a better writer. To be more specific, reading at least a book in a month. At the end of the year, I would really want to see myself being a good writer with advanced "expressioning" and vocabularies.
Well, for science, my goal is to enlarge my knowledge of Biology.The reason why I chose Biology among other areas of science is that it is simply interesting. When I first encountered subject "Biology" it just hooked me with the idea of cells all working together, and making action of moving, working, thinking, etc.