Geographic Timeline Relfection

Geographic Timeline Reflection

    

    One of three major events that happened during Earth's history was the formation of Earth, when it was a planet entirely made of lava and constantly bombarded with comets and meteorites. Another major event that occurred was when the super-continent called Pangea formed, along with reptiles and other types of animals. A third major event was when a massive asteroid hit the Yucatan peninsula, and most dinosaurs went extinct, which is why they aren't around today.

    Earth's history dates back for forever, and we are only an incredibly tiny smudge compared to the rest of the periods. I was surprised by this because obviously it feels like we've been around forever but we really haven't.

    The impact we've had on Earth in such a short time is pretty frightening, considering that we have been able to damage and manipulate it in this time period. It really makes me wonder about what the future has in store for humans.

Prevention: Alzheimer's Blog Post #3

Alzheimer's: Prevention

         I've learned so much more since my last blog post about Alzheimer's disease and more importantly, how to prevent it. I will definitely include the six pillars of Alzheimer's prevention in my final project. One thing I've learned about myself throughout this project is that I actually work very well under stress or pressure or confusion. Or all of the above. Whenever I found myself in a pit during this project, I would stop and think about my next move before acting on it. I feel like that's helped me through my research a lot. I've only encountered a few setbacks revolving around confusion or what to do next for my project. I was able to get over them by taking breaks and stopping to think about my progress.
        The next step in my process is to begin my final product. I'm going to try and piece my entire differences list together within the next few weeks. The great thing about choosing Alzheimer's disease as my topic for my 20-time project is that now I know the differences between the actual disease and normal aging, I can tell whether or not I will have it once I'm older. Alzheimer's is genetic in my family, so it's something we need to be really aware of. I can apply the prevention techniques I've learned to my routine to help slow down the process if I ever find myself diagnosed.

            

Unit 8 Reflection

Unit 8 Reflection

          In this unit, we learned about artificial selection, natural selection, evolution, speciation, and the geographic timeline. We were taught the difference between artificial selection and natural selection, which to me, sounded as if it'd be nearly nonexistent, but as it turned out they were nearly two completely different types of selection. 

Artificial selection involves breeders picking out which animals to breed for which desired traits.

Natural selection occurs when a species is unable to adapt with the phenotypes it was born with, and thus, dies off.

        http://www.csus.edu/indiv/l/loom/wk%2015/dogs.jpg

  

        

http://evolution.berkeley.edu/evolibrary/images/interviews/naturalselection1.gif

                 We also learned what speciation was. Notice how I said we learned "what" it was and not "about" it. That's because I had absolutely no idea this term even existed before this unit. Apparently, speciation is the rise of two or more species from one existing species. I thought this was simply called evolution but apparently it's more specific than just that. Evolution is just the change in allele frequency over time.

          The geographic timeline is still pretty confusing to me, but I'm sure it won't be once we finish our group project of creating an actual timeline on it. 

   I think it'd be interesting to learn more about the dinosaur's downgraded evolution. I want to know how a giant velociraptor could eventually transform into a chicken after a couple billion years.

         As for the assertiveness, I'm still working on it. I'm not very good at being assertive because I often confuse assertiveness with aggression, and I obviously don't want to be aggressive. One thing I did was when the woman making my sandwich at Subway asked if I wanted my sandwich toasted or not I actually said no this time instead of just awkwardly agreeing to it. Baby steps.

Hunger Games Lab

Hunger Games Lab

1) In this lab, all of us were divided into 3 different variations of the same species. There were Stumpys, Knucklers, and Pinchers. It simulated natural selection.

2) The Pinchers were the best for capturing food since they were able to grab the food more efficiently using their pinkies and their thumbs.

3) The population did evolve because the allele frequency for each allele changed gradually over the course of the experiment. The allele frequency for both alleles began at .50 and the "A" allele ended with 0.35 and the "a" allele ended with 0.65. Therefore, the population did evolve.

4) One random event that occurred was where the food was placed and who was closer to it. Whoever ended up being closer had a greater advantage to surviving. A nonrandom event involves the type of phenotype the person was assigned.

5) If the food were larger, it would be a lot harder for the Pinchers and the Knucklers to pick it up, but would be easier for the Stumpys. If the food were smaller, it'd be easier for Pinchers and Knucklers but harder for Stumpys. Ways this could happen in nature is if a predator can't hunt prey that's bigger than itself. 

6) The results would have been different if there was not incomplete dominance because everyone would be either a Stumpy or a Pincher.

7) The relationship between natural selection and evolution is that natural selection causes evolution, since only those with weaker traits are unable to survive and reproduce, those that do survive reproduce and the future generations look only like those that had survived originally.

8) Strategies that people adopted in order to increase their likelihood of survival and reproduction usually involved cheating or stealing or being more aggressive. This would have affected the allele frequency in the population that those who took part in these strategies would have more offspring of their species. This occurs in nature when animals attack each other or rob others for food or survival.

9) In evolution, the phenotype is what evolves, not necessarily the being. Natural selection acts on mainly phenotypes, since these are what affect an organisms ability to adapt in their environment.

10) Are there some species that have underdog traits and still managed to survive and reproduce, even though they were expected to die off?

Unit 7 Relfection

Unit 7 Reflection

          In this unit, we learned all about ecology, including interdependence, homeostasis, cause & effect, and others. I felt more invested in this unit than others because I think it's interesting to learn about what affects our ecosystems and what we can do to help improve the conditions, and also very rarely felt confused or discouraged about learning more about ecology and the environment. 

          The first thing we learned about was, obviously, ecology. We were taught that ecology is the study of interactions between organisms in their environment. This means it's the study of predators, prey, and how other organisms that live together in an ecosystem work together. I learned that a niche includes all of the factors that a species needs to survive, stay healthy, and reproduce and that a habitat includes all aspects of the area in which an organism lives. I didn't think that there was much of a difference before. 

          Interdependence is when all living things are dependent on each other, and abiotic factors, for survival. I thought this was interesting because I didn't think that some living things were so crucially dependent on another to live. Homeostasis, or equilibrium, is when environments are healthiest when they are in balance. Just like the human body, environments are at their healthiest when there is nothing disrupting the natural flow of life. Cause and effect reminds me of karma because if something is thrown out of balance in an ecosystem, it will most likely have a lot of trouble recovering. 

          I feel like I learned a lot more about ecology and environments during the conservation project. It gave me a wider understanding of the true impact that humans have on many different environments across the globe. This project made me more sensitive towards issues like deforestation. 

          

Catch it Before it's Too Late: Alzheimer's Blog Post #1

Alzheimer's: Catch it Before it's Too Late

          I'm doing my 20-time project on Alzheimer's disease. 20-time is a structured, methodical in-class project where students can choose a topic they're genuinely interested about and do a project on it. When starting out with my project, I asked myself the question, "What if there were a way to tell the difference between Alzheimer's disease and natural aging to catch it early on and maybe even stall the progression of the disease?" This is why I chose to commit to Alzheimer's disease as my 20-time project. I believe that people are only hurting themselves when they choose to ignore signs of Alzheimer's early on. By doing this, they won't get a chance to try and fight the disease while they can. There is no cure for Alzheimer's, but there are treatments that can significantly help those diagnosed. 

          I want to be able to create a document of some sort where people can see the difference between what is normal in aging and what is not, and add ideas for natural treatment for the ailment. I will measure my progress and achievements through these blog posts. My plan moving forward is to research even more in depth of the underlying symptoms of AD, hopefully find symptoms that are easily overlooked.

Picture used:
http://brainmaxima.com/go/img/Alzheimers%20Disease.png

Candy Electrophoresis Lab

Candy Electrophoresis Lab

          In this lab, we extracted the artificial food dye from various candies. After extracting the dye, we used gel electrophoresis to separate them by size. When we analyzed the results of our gel, all of our experimental samples were where they were supposed to be, and everything ran smoothly. Some of our dyes spilled a little outside of the designated vats, but other than that, they were fine. 

          Out of the four dyes pictured in the manual, citrus red 2 would be the one to migrate similarly to the dyes we examined in this lab, since it was stated that smaller molecules would be able to move faster through the gel pores than larger molecules.

          Since popular dog food manufacturers appear to put more red dye in the food than any other color, it can only mean that they do that to appeal more to the dog, since animals can perceive red clearer than any other color in the spectrum. This is why it would be common to put artificial food dye in dog food.

          The two factors that control the distance the colored dye solutions migrate are negatively charged molecules and positively charged molecules. The negatively charged molecules move toward the positive electrode and positively charged molecules move toward the negative electrode. Any molecules with no charge will not leave the well.

          The component of the electrophoresis system that causes the molecules to be separated by size are the electrical currents and charges inside the molecules. 

          DNA molecules with molecular weights of 600, 1000, 2000, and 5000 daltons would separate with the least amount of daltons to stretch faster, but not as far as the others.