Friday, January 21, 2011
Mitosis
Even though I was gone for the mitosis lab(sadly) I really learned a lot from the website on edmodo.com. I learned about the different phases of mitosis. Mitosis is basically like cloning because the cell just divides in order to create a new living organism, almost exactly like the "parent". Examples would be different types of plants.
Interphase is when the DNA duplicates to prepare for mitosis.
Prophase is when the nuclear membrane dissolves, proteins attach to centromeres creating kinetochores, microtubules attach at the kinetochores and the chromosomes move.
Metaphase is when the spindle fibers align chromosomes along the middle of the cell nucleus. The formed line is called the metaphase plate.
Anaphase is when the paired chromosomes separate at the kinetochores and move to opposite sides of the cell.
Telophase is when the new membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Cytokinesis may also occur.
The results from the online tutorial are as follows:
Interphase Prophase Metaphase Anaphase Telophase
# Cells 20 10 3 2 1
% Cells 55.6% 27.8% 8.3% 5.6% 2.8%
The differences between the different stages of mitosis are pretty easily determined, as soon as you learn what you're looking for.
The stages:
Interphase is when the DNA duplicates to prepare for mitosis.
Prophase is when the nuclear membrane dissolves, proteins attach to centromeres creating kinetochores, microtubules attach at the kinetochores and the chromosomes move.
Metaphase is when the spindle fibers align chromosomes along the middle of the cell nucleus. The formed line is called the metaphase plate.
Anaphase is when the paired chromosomes separate at the kinetochores and move to opposite sides of the cell.
Telophase is when the new membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Cytokinesis may also occur.
The results from the online tutorial are as follows:
Interphase Prophase Metaphase Anaphase Telophase
# Cells 20 10 3 2 1
% Cells 55.6% 27.8% 8.3% 5.6% 2.8%
The differences between the different stages of mitosis are pretty easily determined, as soon as you learn what you're looking for.
The stages:
Friday, January 14, 2011
Self Reflection!!
Reading the article, I was surprised it wasn't really about Biology since this IS a Biology class, but I liked what I was learning. One of the main points that the article made was that just because you don't know what you want to do in life, doesn't mean you're out of luck, you just need to do your research and discover a job that you will love. Also, go into a profession that will give you more options. For example study math so you can do pretty much anything! But, study something that you enjoy! If you don't enjoy the subject that you're studying or the profession you're entering, you won't do well at your job. Don't limit yourself. The article also talked about premature optimization, meaning that the saying "you can do anything you want" is not necessarily true. For example a 5 foot person wanting to play in the NBA, it's not likely. But, just because you don't want premature optimization doesn't mean you should become demoralized. Don't think you can't do anything that other people are doing. Always try for what you want.
The article also talked about the difference between adults and teens. Adults do have a job to make money, but so do most teens. Adults are more than likely to take responsibility for themselves unlike most teens these days who blame other people. Although adults are at a job everyday, the article talked about treating school as your job. It basically is your job except you don't get paid. I learned that I have to try my best in school since it's my main responsibility right now, even though it's not my only responsibility. Most high school juniors and seniors(especially me) are always thinking about what we can do to get into college. But the article talked about not designing your life around trying to get into college, which is something I need to work on. Some college somewhere will accept you even if you fail all of your classes so there shouldn't be any stress. Now this isn't an excuse to fail all of your classes, but it should show some relief for those who are stressing. Another topic was the difference between prep schools and public schools. Prep schools shouldn't make a difference because the only difference is that the kids at prep school just have more money, not more skills. Yet, colleges still are likely to choose kids from prep schools.
Another thing the article discussed was that children and teens need motivation to carry out their dreams. Obviously having the dream itself should be enough motivation but sometimes it doesn't work that way. I think I need to stop focusing so much on what I need to accomplish to get into college and focus more on enjoying my childhood. I do need to remain focused on school, but my entire life doesn't need to be centered around improving my college application. (:
The article also talked about the difference between adults and teens. Adults do have a job to make money, but so do most teens. Adults are more than likely to take responsibility for themselves unlike most teens these days who blame other people. Although adults are at a job everyday, the article talked about treating school as your job. It basically is your job except you don't get paid. I learned that I have to try my best in school since it's my main responsibility right now, even though it's not my only responsibility. Most high school juniors and seniors(especially me) are always thinking about what we can do to get into college. But the article talked about not designing your life around trying to get into college, which is something I need to work on. Some college somewhere will accept you even if you fail all of your classes so there shouldn't be any stress. Now this isn't an excuse to fail all of your classes, but it should show some relief for those who are stressing. Another topic was the difference between prep schools and public schools. Prep schools shouldn't make a difference because the only difference is that the kids at prep school just have more money, not more skills. Yet, colleges still are likely to choose kids from prep schools.
Another thing the article discussed was that children and teens need motivation to carry out their dreams. Obviously having the dream itself should be enough motivation but sometimes it doesn't work that way. I think I need to stop focusing so much on what I need to accomplish to get into college and focus more on enjoying my childhood. I do need to remain focused on school, but my entire life doesn't need to be centered around improving my college application. (:
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